QA catalogue for analysing library data

by document types: all · Books · Continuing Resources · Music · Maps · Visual Materials · Mixed Materials · Computer Files

number of records: 38,105

Fields		fields	pos./subf.		count	%
Fields defined in MARC21
00X	Control Fields	2	39		38,105	100.00
01X-09X	Numbers and Code	16	68		38,072	99.91
1XX	Main Entry	3	30		27,447	72.03
20X-24X	Title	6	42		38,103	99.99
25X-28X	Edition, Imprint	6	25		38,029	99.80
3XX	Physical Description	8	36		37,818	99.25
4XX	Series Statement	1	4		49	0.13
5XX	Note	18	71		28,917	75.89
6XX	Subject Access	8	59		30,352	79.65
70X-75X	Added Entry	5	45		30,473	79.97
76X-78X	Linking Entry	12	86		27,372	71.83
80X-83X	Series Added Entry	2	8		8	0.02
841-88X	Holdings, Location, Alternate Graphics	2	11		10,364	27.20
Holdings	MARC Holdings tags	1	4		3	0.01
Fields defined in extensions of MARC
OCLC	OCLCMARC tags	1	3		7,736	20.30
KBR	Locally defined tags of the Royal Library of Belgium	1	9		37,977	99.66
unknown	unknown origin	2	5		2	0.01
Total number of data elements		94	545

				records		occurences
				count	%	count	min	max	⌀	σ
00X: Control Fields
Leader
00	Record length			38,105	100.00	38,105	1
05	Record status			38,105	100.00	38,105	1
06	Type of record			38,105	100.00	38,105	1
07	Bibliographic level			38,105	100.00	38,105	1
08	Type of control			38,105	100.00	38,105	1
09	Character coding scheme			38,105	100.00	38,105	1
10	Indicator count			38,105	100.00	38,105	1
11	Subfield code count			38,105	100.00	38,105	1
12	Base address of data			38,105	100.00	38,105	1
17	Encoding level			38,105	100.00	38,105	1
18	Descriptive cataloging form			38,105	100.00	38,105	1
19	Multipart resource record level			38,105	100.00	38,105	1
20	Length of the length-of-field portion			38,105	100.00	38,105	1
21	Length of the starting-character-position portion			38,105	100.00	38,105	1
22	Length of the implementation-defined portion			38,105	100.00	38,105	1
23	Undefined			38,105	100.00	38,105	1
001 — Control Number				38,105	100.00	38,105	1
005 — Date and Time of Latest Transaction				4	0.01	4	1
007 — Physical Description
Common
00	Category of material			5,766	15.13	5,766	1	2	1.04	0.00
Map
01	Specific material designation			5,761	15.12	5,761	1
03	Color			7	0.02	7	1
04	Physical medium			7	0.02	7	1
05	Type of reproduction			7	0.02	7	1
06	Production/reproduction details			7	0.02	7	1
07	Positive/negative aspect			7	0.02	7	1
Text
01	Specific material designation			5	0.01	5	1	2	1.00	0.00
008 — General Information
All Materials
00	Date entered on file			35,674	93.62	35,674	1
06	Type of date/Publication status			35,674	93.62	35,674	1
07	Date 1			35,674	93.62	35,674	1
11	Date 2			35,674	93.62	35,674	1
15	Place of publication, production, or execution			35,674	93.62	35,674	1
35	Language			35,433	92.99	35,433	1
38	Modified record			35,430	92.98	35,430	1
39	Cataloging source			35,430	92.98	35,430	1
Maps
18	Relief			35,674	93.62	35,674	1
22	Projection			35,674	93.62	35,674	1
25	Type of cartographic material			35,433	92.99	35,433	1
28	Government publication			35,433	92.99	35,433	1
29	Form of item			35,433	92.99	35,433	1
31	Index			35,433	92.99	35,433	1
33	Special format characteristics			35,433	92.99	35,433	1
01X-09X: Numbers and Code
010 — Library of Congress Control Number				7	0.02	7	1
$#	number/occurrence of field (in KBR version)			7	0.02	7	1
$a	LC control number			7	0.02	7	1
$z	Canceled/invalid LC control number			3	0.01	3	1	2	1.17	0.07
017 — Copyright or Legal Deposit Number				2,398	6.29	2,422	1	254	1.03	0.00
$ind2	Display constant controller			2,398	6.29	2,422	1	254	1.03	0.00
$#	number/occurrence of field (in KBR version)			1,178	3.09	1,183	1	45	1.01	0.00
$a	Copyright or legal deposit number			1,836	4.82	1,860	1	254	1.03	0.00
$b	Assigning agency			228	0.60	228	1	16	1.00	0.00
$z	Canceled/invalid copyright or legal deposit number			557	1.46	557	1	4	1.01	0.00
020 — International Standard Book Number				2,537	6.66	2,554	1	200	1.04	0.00
$#	number/occurrence of field (in KBR version)			1,148	3.01	1,155	1	84	1.03	0.00
$a	International Standard Book Number			1,277	3.35	1,293	1	100	1.04	0.00
$c	Terms of availability			1,806	4.74	1,807	1	63	1.01	0.00
$q	Qualifying information			436	1.14	436	1	84	1.10	0.00
$z	Canceled/invalid ISBN			14	0.04	14	1	100	1.11	0.02
$8	Field link and sequence number			1	0.00	5	5
022 — International Standard Serial Number				2	0.01	2	1	49	1.00	0.00
$ind1	Level of international interest			2	0.01	2	1	49	1.00	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	4	1.01	0.00
$a	International Standard Serial Number			2	0.01	2	1	49	1.00	0.00
024 — Other Standard Identifier				64	0.17	64	1	11	1.01	0.00
$ind1	Type of standard number or code			64	0.17	64	1	11	1.01	0.00
$ind2	Difference indicator			64	0.17	64	1	11	1.01	0.00
$#	number/occurrence of field (in KBR version)			50	0.13	50	1	4	1.01	0.00
$a	Standard number or code			64	0.17	64	1	11	1.01	0.00
028 — Publisher or Distributor Number				1	0.00	1	1	21	1.54	0.00
$ind1	Type of number			1	0.00	1	1	21	1.54	0.00
$ind2	Note/added entry controller			1	0.00	1	1	21	1.54	0.00
$a	Publisher or distributor number			1	0.00	1	1	21	1.54	0.00
034 — Coded Cartographic Mathematical Data				5,520	14.49	5,534	1	3	1.00	0.00
$ind1	Type of scale			5,520	14.49	5,534	1	3	1.00	0.00
$ind2	Type of ring			5,520	14.49	5,534	1	3	1.00	0.00
$#	number/occurrence of field (in KBR version)			5,399	14.17	5,409	1	2	1.00	0.00
$a	Category of scale			5,489	14.40	5,503	1	3	1.00	0.00
$b	Constant ratio linear horizontal scale			228	0.60	232	1	3	1.01	0.01
$d	Coordinates - westernmost longitude			295	0.77	303	1	3	1.03	0.01
$e	Coordinates - easternmost longitude			231	0.61	239	1	3	1.03	0.01
$f	Coordinates - northernmost latitude			231	0.61	239	1	3	1.03	0.01
$g	Coordinates - southernmost latitude			231	0.61	239	1	3	1.03	0.01
$1	Real World Object URI			16	0.04	16	1
$2	Source			16	0.04	16	1
035 — System Control Number				18	0.05	20	1	5	1.00	0.00
$#	number/occurrence of field (in KBR version)			4	0.01	6	1	4	1.02	0.00
$a	System control number			18	0.05	20	1	5	1.00	0.00
040 — Cataloging Source				38,070	99.91	38,078	1	4	1.00	0.00
$#	number/occurrence of field (in KBR version)			24,444	64.15	24,452	1	4	1.00	0.00
$a	Original cataloging agency			38,070	99.91	38,078	1	4	1.00	0.00
$b	Language of cataloging			13,201	34.64	13,201	1	4	1.00	0.00
$c	Transcribing agency			7	0.02	7	1
$d	Modifying agency			8	0.02	13	1	30	1.22	0.01
$e	Description conventions			12,655	33.21	12,655	1	4	1.00	0.00
041 — Language Code				35,297	92.63	35,312	1	5	1.00	0.00
$ind1	Translation indication			35,297	92.63	35,312	1	5	1.00	0.00
$ind2	Source of code			35,297	92.63	35,312	1	5	1.00	0.00
$#	number/occurrence of field (in KBR version)			21,393	56.14	21,408	1	5	1.00	0.00
$a	Language code of text/sound track or separate title			35,297	92.63	36,624	1	16	1.03	0.00
$h	Language code of original			17	0.04	17	1	12	1.00	0.00
043 — Geographic Area Code				1	0.00	1	1
$#	number/occurrence of field (in KBR version)			1	0.00	1	1
$a	Geographic area code			1	0.00	1	1	5	1.13	0.00
044 — Country of Publishing/Producing Entity Code				35,278	92.58	35,280	1	4	1.00	0.00
$#	number/occurrence of field (in KBR version)			21,506	56.44	21,508	1	4	1.00	0.00
$a	MARC country code			35,278	92.58	38,155	1	8	1.04	0.00
050 — Library of Congress Call Number				6	0.02	6	1	2	1.04	0.00
$ind1	Existence in LC collection			6	0.02	6	1	2	1.04	0.00
$ind2	Source of call number			6	0.02	6	1	2	1.04	0.00
$#	number/occurrence of field (in KBR version)			4	0.01	4	1	2	1.03	0.00
$a	Classification number			6	0.02	6	1	2	1.04	0.00
$b	Item number			4	0.01	4	1	2	1.12	0.00
052 — Geographic Classification				6	0.02	6	1
$ind1	Code source			6	0.02	6	1
$#	number/occurrence of field (in KBR version)			6	0.02	6	1
$a	Geographic classification area code			6	0.02	6	1
$b	Geographic classification subarea code			4	0.01	4	1
080 — Universal Decimal Classification Number				1	0.00	1	1	4	1.13	0.00
$ind1	Type of edition			1	0.00	1	1	4	1.13	0.00
$a	Universal Decimal Classification number			1	0.00	1	1	4	1.13	0.00
082 — Dewey Decimal Classification Number				5	0.01	5	1	4	1.03	0.00
$ind1	Type of edition			5	0.01	5	1	4	1.03	0.00
$ind2	Source of classification number			5	0.01	5	1	4	1.03	0.00
$#	number/occurrence of field (in KBR version)			5	0.01	5	1	2	1.01	0.00
$a	Classification number			5	0.01	5	1	4	1.04	0.00
$2	Edition information			5	0.01	5	1	2	1.00	0.00
1XX: Main Entry
100 — Main Entry - Personal Name				12,339	32.38	12,344	1	4	1.00	0.00
$ind1	Type of personal name entry element			12,339	32.38	12,344	1	4	1.00	0.00
$#	number/occurrence of field (in KBR version)			5,475	14.37	5,480	1	4	1.00	0.00
$*	Link with identifier (in KBR version)			12,339	32.38	12,344	1	4	1.00	0.00
$@	Language of field (in KBR version)			5	0.01	5	1	2	1.00	0.00
$a	Personal name			12,339	32.38	12,344	1	4	1.00	0.00
$b	Numeration			271	0.71	271	1	2	1.00	0.00
$c	Titles and words associated with a name			2,381	6.25	2,406	1	9	1.03	0.00
$d	Dates associated with a name			10,711	28.11	10,717	1	4	1.00	0.00
$g	Miscellaneous information			99	0.26	101	1	2	1.00	0.00
$j	Attribution qualifier			1	0.00	1	1
$q	Fuller form of name			325	0.85	326	1	3	1.00	0.00
$0	Authority record control number or standard number			1	0.00	1	1
$1	Real World Object URI			7,331	19.24	7,332	1	4	1.00	0.00
$4	Relationship			5,600	14.70	5,975	1	6	1.05	0.00
110 — Main Entry - Corporate Name				15,580	40.89	15,825	1	3	1.00	0.00
$ind1	Type of corporate name entry element			15,580	40.89	15,825	1	3	1.00	0.00
$#	number/occurrence of field (in KBR version)			5,737	15.06	5,914	1	3	1.01	0.00
$*	Link with identifier (in KBR version)			15,580	40.89	15,825	1	3	1.00	0.00
$@	Language of field (in KBR version)			1,118	2.93	1,282	1	3	1.03	0.00
$a	Corporate name or jurisdiction name as entry element			15,579	40.88	15,824	1	3	1.00	0.00
$b	Subordinate unit			1,207	3.17	1,377	1	5	1.21	0.00
$c	Location of meeting			407	1.07	407	1	3	1.02	0.00
$d	Date of meeting or treaty signing			4,644	12.19	4,644	1
$g	Miscellaneous information			9,822	25.78	9,836	1	3	1.00	0.00
$l	Language of a work			15	0.04	15	1
$1	Real World Object URI			187	0.49	187	1	2	1.00	0.00
$4	Relationship			8,348	21.91	15,606	1	6	1.21	0.00
130 — Main Entry - Uniform Title				131	0.34	131	1
$ind1	Nonfiling characters			131	0.34	131	1
$#	number/occurrence of field (in KBR version)			131	0.34	131	1
$*	Link with identifier (in KBR version)			131	0.34	131	1
$a	Uniform title			131	0.34	131	1
20X-24X: Title
210 — Abbreviated Title				1	0.00	1	1	10	1.49	0.01
$ind1	Title added entry			1	0.00	1	1	10	1.49	0.01
$ind2	Type			1	0.00	1	1	10	1.49	0.01
$a	Abbreviated title			1	0.00	1	1	10	1.49	0.01
240 — Uniform Title				1,097	2.88	1,097	1
$ind1	Uniform title printed or displayed			1,097	2.88	1,097	1
$ind2	Nonfiling characters			1,097	2.88	1,097	1
$#	number/occurrence of field (in KBR version)			336	0.88	336	1
$*	Link with identifier (in KBR version)			1,097	2.88	1,097	1
$a	Uniform title			1,097	2.88	1,097	1
$f	Date of a work			1	0.00	1	1
$g	Miscellaneous information			1	0.00	1	1
$p	Name of part/section of a work			27	0.07	27	1
243 — Collective Uniform Title				1	0.00	1	1
$ind1	Uniform title printed or displayed			1	0.00	1	1
$ind2	Nonfiling characters			1	0.00	1	1
$#	number/occurrence of field (in KBR version)			1	0.00	1	1
$a	Uniform title			1	0.00	1	1
245 — Title Statement				38,103	99.99	38,105	1	4	1.01	0.00
$ind1	Title added entry			38,103	99.99	38,105	1	4	1.01	0.00
$ind2	Nonfiling characters			38,103	99.99	38,105	1	4	1.01	0.00
$#	number/occurrence of field (in KBR version)			25,913	68.00	25,915	1	4	1.02	0.00
$a	Title			38,103	99.99	38,105	1	9	1.01	0.00
$b	Remainder of title			12,551	32.94	12,551	1	10	1.00	0.00
$c	Statement of responsibility, etc.			21,731	57.03	21,733	1	4	1.00	0.00
$h	Medium			25,541	67.03	25,543	1	3	1.01	0.00
$n	Number of part/section of a work			610	1.60	633	1	25	1.10	0.00
$p	Name of part/section of a work			116	0.30	135	1	48	1.12	0.00
$6	Linkage			1	0.00	1	1
246 — Varying Form of Title				2,285	6.00	2,967	1	24	1.21	0.00
$ind1	Note/added entry controller			2,285	6.00	2,967	1	24	1.21	0.00
$ind2	Type of title			2,285	6.00	2,967	1	24	1.21	0.00
$#	number/occurrence of field (in KBR version)			936	2.46	1,156	1	24	1.34	0.00
$@	Language of field (in KBR version)			35	0.09	35	1	5	1.92	0.00
$a	Title proper/short title			2,273	5.97	2,955	1	24	1.21	0.00
$b	Remainder of title			587	1.54	742	1	6	1.10	0.00
$f	Date or sequential designation			1	0.00	1	1	3	1.50	0.07
$g	Miscellaneous information			13	0.03	14	1	8	1.06	0.00
$h	Medium			7	0.02	8	1	5	1.64	0.12
$i	Display text			27	0.07	28	1	10	1.03	0.00
$n	Number of part/section of a work			2	0.01	7	1	9	1.09	0.01
247 — Former Title				2	0.01	3	1	3	1.03	0.00
$ind1	Title added entry			2	0.01	3	1	3	1.03	0.00
$ind2	Note controller			2	0.01	3	1	3	1.03	0.00
$#	number/occurrence of field (in KBR version)			1	0.00	2	1	2	1.02	0.01
$a	Title			2	0.01	3	1	3	1.03	0.00
$b	Remainder of title			1	0.00	1	1
$f	Date or sequential designation			1	0.00	2	1	3	1.03	0.01
25X-28X: Edition, Imprint
250 — Edition Statement				4,315	11.32	4,619	1	4	1.01	0.00
$#	number/occurrence of field (in KBR version)			3,347	8.78	3,650	1	4	1.02	0.00
$@	Language of field (in KBR version)			150	0.39	310	1	3	2.02	0.00
$a	Edition statement			4,315	11.32	4,619	1	4	1.01	0.00
$b	Remainder of edition statement			183	0.48	183	1	2	1.00	0.00
254 — Musical Presentation Statement				1	0.00	1	1
$#	number/occurrence of field (in KBR version)			1	0.00	1	1
$a	Musical presentation statement			1	0.00	1	1	2	1.00	0.00
255 — Cartographic Mathematical Data				29,992	78.71	30,089	1	5	1.00	0.00
$#	number/occurrence of field (in KBR version)			18,700	49.07	18,739	1	4	1.00	0.00
$a	Statement of scale			29,420	77.21	29,502	1	5	1.00	0.00
$b	Statement of projection			887	2.33	887	1
$c	Statement of coordinates			3,362	8.82	3,384	1	4	1.01	0.00
$f	Outer G-ring coordinate pairs			16	0.04	16	1
263 — Projected Publication Date				1	0.00	1	1
$#	number/occurrence of field (in KBR version)			1	0.00	1	1
$a	Projected publication date			1	0.00	1	1
264 — Production, Publication, Distribution, Manufacture, and Copyright Notice				37,836	99.29	44,162	1	33	1.05	0.00
$ind1	Sequence of statements			37,836	99.29	44,162	1	33	1.05	0.00
$ind2	Function of entity			37,836	99.29	44,162	1	33	1.05	0.00
$#	number/occurrence of field (in KBR version)			24,372	63.96	27,322	1	30	1.05	0.00
$@	Language of field (in KBR version)			1,854	4.87	1,860	1	3	1.01	0.00
$a	Place of production, publication, distribution, manufacture			34,730	91.14	37,830	1	22	1.13	0.00
$b	Name of producer, publisher, distributor, manufacturer			34,669	90.98	38,335	1	28	1.07	0.00
$c	Date of production, publication, distribution, manufacture, or copyright notice			37,713	98.97	43,616	1	32	1.05	0.00
270 — Address				1	0.00	2	1	4	1.78	0.26
$ind1	Level			1	0.00	2	1	4	1.78	0.26
$ind2	Type of address			1	0.00	2	1	4	1.78	0.26
$a	Address			1	0.00	1	1
$b	City			1	0.00	1	1
$c	State or province			1	0.00	2	1	4	1.78	0.26
3XX: Physical Description
300 — Physical Description				37,644	98.79	37,693	1	10	1.03	0.00
$#	number/occurrence of field (in KBR version)			24,135	63.34	24,169	1	10	1.05	0.00
$a	Extent			37,118	97.41	37,127	1	10	1.01	0.00
$b	Other physical details			26,993	70.84	27,025	1	10	1.01	0.00
$c	Dimensions			36,099	94.74	36,110	1	4	1.00	0.00
$e	Accompanying material			1,076	2.82	1,076	1	4	1.00	0.00
306 — Playing Time				1	0.00	1	1
$a	Playing time			1	0.00	1	1	6	1.02	0.01
$c				1	0.00	1	1
336 — Content Type				21,519	56.47	21,520	1	3	1.01	0.00
$#	number/occurrence of field (in KBR version)			9,729	25.53	9,730	1	3	1.01	0.00
$a	Content type term			21,519	56.47	23,897	1	6	1.23	0.00
$b	Content type code			16	0.04	16	1	3	1.06	0.01
$2	Source			21,458	56.31	21,459	1	3	1.00	0.00
337 — Media Type				21,519	56.47	21,519	1	2	1.00	0.00
$#	number/occurrence of field (in KBR version)			9,729	25.53	9,729	1	2	1.00	0.00
$a	Media type term			21,519	56.47	21,519	1	2	1.00	0.00
$b	Media type code			16	0.04	16	1
$2	Source			21,458	56.31	21,458	1	2	1.00	0.00
338 — Carrier Type				21,527	56.49	21,527	1	2	1.00	0.00
$#	number/occurrence of field (in KBR version)			9,737	25.55	9,737	1	2	1.00	0.00
$a	Carrier type term			21,467	56.34	21,467	1	2	1.00	0.00
$b	Carrier type code			1	0.00	1	1	2	1.00	0.00
$2	Source			21,472	56.35	21,472	1	2	1.00	0.00
340 — Physical Medium				29	0.08	29	1	8	1.01	0.00
$#	number/occurrence of field (in KBR version)			28	0.07	28	1	4	1.00	0.00
$a	Material base and configuration			2	0.01	2	1	8	1.01	0.00
$d	Information recording technique			12	0.03	12	1
$l	Binding			15	0.04	15	1	3	1.00	0.00
342 — Geospatial Reference Data				15	0.04	15	1
$ind1	Geospatial reference dimension			15	0.04	15	1
$ind2	Geospatial reference method			15	0.04	15	1
$#	number/occurrence of field (in KBR version)			15	0.04	15	1
$a	Name			15	0.04	15	1
$b	Coordinate units or distance units			15	0.04	15	1
$c	Latitude resolution			15	0.04	15	1
$d	Longitude resolution			15	0.04	15	1
$q	Ellipsoid name			15	0.04	15	1
$r	Semi-major axis			15	0.04	15	1
$s	Denominator of flattening ratio			15	0.04	15	1
362 — Dates of Publication and/or Sequential Designation				6	0.02	6	1	3	1.00	0.00
$ind1	Format of date			6	0.02	6	1	3	1.00	0.00
$#	number/occurrence of field (in KBR version)			3	0.01	3	1	3	1.01	0.00
$a	Dates of publication and/or sequential designation			6	0.02	6	1	4	1.00	0.00
4XX: Series Statement
490 — Series Statement				49	0.13	49	1	5	1.01	0.00
$ind1	Series tracing policy			49	0.13	49	1	5	1.01	0.00
$#	number/occurrence of field (in KBR version)			32	0.08	32	1	3	1.02	0.00
$a	Series statement			49	0.13	52	1	5	1.02	0.00
$v	Volume/sequential designation			32	0.08	33	1	8	1.45	0.00
5XX: Note
500 — General Note				19,214	50.42	27,544	1	76	1.34	0.00
$#	number/occurrence of field (in KBR version)			14,524	38.12	21,691	1	76	1.27	0.00
$@	Language of field (in KBR version)			1	0.00	1	1	3	1.08	0.00
$a	General note			19,214	50.42	27,543	1	76	1.34	0.00
501 — With Note				22	0.06	22	1	2	1.01	0.01
$#	number/occurrence of field (in KBR version)			21	0.06	21	1
$a	With note			22	0.06	22	1	2	1.01	0.01
504 — Bibliography, etc. Note				10	0.03	10	1	9	1.05	0.00
$#	number/occurrence of field (in KBR version)			10	0.03	10	1	9	1.05	0.00
$a	Bibliography, etc. note			10	0.03	10	1	9	1.05	0.00
505 — Formatted Contents Note				1,876	4.92	1,986	1	214	3.14	0.02
$ind1	Display constant controller			1,876	4.92	1,986	1	214	3.14	0.02
$ind2	Level of content designation			1,876	4.92	1,986	1	214	3.14	0.02
$#	number/occurrence of field (in KBR version)			855	2.24	903	1	214	2.68	0.05
$a	Formatted contents note			401	1.05	453	1	35	1.87	0.02
$g	Miscellaneous information			1	0.00	1	1	291	25.93	1.36
$r	Statement of responsibility			3	0.01	3	1	84	4.47	0.05
$t	Title			1,480	3.88	1,595	1	214	4.71	0.03
510 — Citation/References Note				3,318	8.71	3,623	1	10	1.14	0.00
$ind1	Coverage/location in source			3,318	8.71	3,623	1	10	1.14	0.00
$#	number/occurrence of field (in KBR version)			1,052	2.76	1,179	1	10	1.26	0.00
$a	Name of source			3,318	8.71	3,623	1	10	1.14	0.00
$b	Coverage of source			1	0.00	1	1
$c	Location within source			6	0.02	7	1	4	1.06	0.00
$u	Uniform Resource Identifier			1	0.00	1	1
511 — Participant or Performer Note				10	0.03	16	1	20	1.17	0.00
$ind1	Display constant controller			10	0.03	16	1	20	1.17	0.00
$#	number/occurrence of field (in KBR version)			9	0.02	14	1	8	1.17	0.00
$a	Participant or performer note			10	0.03	16	1	20	1.17	0.00
518 — Date/Time and Place of an Event Note				2	0.01	2	1	5	1.01	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	3	1.03	0.01
$a	Date/time and place of an event note			2	0.01	2	1	5	1.01	0.00
520 — Summary, etc.				27	0.07	27	1	7	1.02	0.00
$ind1	Display constant controller			27	0.07	27	1	7	1.02	0.00
$#	number/occurrence of field (in KBR version)			27	0.07	27	1	6	1.00	0.00
$a	Summary, etc.			27	0.07	27	1	7	1.02	0.00
$c	Assigning source			10	0.03	10	1	2	1.06	0.00
$u	Uniform Resource Identifier			3	0.01	3	1
521 — Target Audience Note				1	0.00	1	1	2	1.00	0.00
$ind1	Display constant controller			1	0.00	1	1	2	1.00	0.00
$#	number/occurrence of field (in KBR version)			1	0.00	1	1	2	1.00	0.00
$a	Target audience note			1	0.00	1	1	3	1.01	0.00
530 — Additional Physical Form available Note				21	0.06	21	1	4	1.01	0.00
$a	Additional physical form available note			21	0.06	21	1	4	1.01	0.00
533 — Reproduction Note				1	0.00	1	1
$#	number/occurrence of field (in KBR version)			1	0.00	1	1
$a	Type of reproduction			1	0.00	1	1
$b	Place of reproduction			1	0.00	1	1
$c	Agency responsible for reproduction			1	0.00	1	1
$d	Date of reproduction			1	0.00	1	1
534 — Original Version Note				10	0.03	10	1
$#	number/occurrence of field (in KBR version)			10	0.03	10	1
$a	Main entry of original			8	0.02	8	1
$c	Publication, distribution, etc. of original			1	0.00	1	1
$p	Introductory phrase			4	0.01	4	1
$t	Title statement of original			2	0.01	2	1
541 — Immediate Source of Acquisition Note				6,098	16.00	6,355	1	3	1.01	0.00
$ind1	Privacy			6,098	16.00	6,355	1	3	1.01	0.00
$#	number/occurrence of field (in KBR version)			6,098	16.00	6,098	1	3	1.01	0.00
$a	Source of acquisition			6,096	16.00	6,353	1	3	1.01	0.00
$b	Address			5,526	14.50	5,526	1
$c	Method of acquisition			6,081	15.96	6,081	1
$d	Date of acquisition			5,384	14.13	5,384	1	2	1.00	0.00
$f	Owner			1	0.00	1	1
$n	Extent			47	0.12	47	1
$o	Type of unit			1	0.00	1	1
545 — Biographical or Historical Data				2	0.01	2	1	2	1.09	0.02
$ind1	Type of data			2	0.01	2	1	2	1.09	0.02
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	2	1.09	0.04
$a	Biographical or historical data			2	0.01	2	1	2	1.10	0.02
$b	Expansion			1	0.00	1	1
561 — Ownership and Custodial History				26	0.07	29	1	6	1.17	0.00
$ind1	Privacy			26	0.07	29	1	6	1.17	0.00
$#	number/occurrence of field (in KBR version)			26	0.07	29	1	6	1.16	0.00
$a	History			26	0.07	29	1	6	1.17	0.00
562 — Copy and Version Identification Note				12,445	32.66	13,301	1	12	1.13	0.00
$#	number/occurrence of field (in KBR version)			9,455	24.81	10,058	1	12	1.12	0.00
$a	Identifying markings			6,256	16.42	6,725	1	5	1.04	0.00
$b	Copy identification			6,233	16.36	6,587	1	12	1.15	0.00
$c	Version identification			755	1.98	755	1	2	1.00	0.00
563 — Binding Information				10	0.03	10	1	3	1.02	0.00
$#	number/occurrence of field (in KBR version)			10	0.03	10	1	3	1.06	0.00
$a	Binding note			10	0.03	10	1	3	1.02	0.00
583 — Action Note				5,191	13.62	5,282	1	3	1.02	0.00
$ind1	Privacy			5,191	13.62	5,282	1	3	1.02	0.00
$#	number/occurrence of field (in KBR version)			5,188	13.62	5,279	1	3	1.02	0.00
$x	Nonpublic note			2	0.01	2	1
$2	Source of term			5,189	13.62	5,280	1	3	1.02	0.00
$5	Institution to which field applies			5,188	13.62	5,279	1	3	1.02	0.00
6XX: Subject Access
600 — Subject Added Entry - Personal Name				2	0.01	3	1	125	1.69	0.02
$ind1	Type of personal name entry element			2	0.01	3	1	125	1.69	0.02
$ind2	Thesaurus			2	0.01	3	1	125	1.69	0.02
$#	number/occurrence of field (in KBR version)			2	0.01	3	1	114	1.48	0.02
$*	Link with identifier (in KBR version)			2	0.01	3	1	125	1.69	0.02
$a	Personal name			2	0.01	3	1	125	1.69	0.02
$c	Titles and other words associated with a name			1	0.00	1	1	117	1.60	0.04
$d	Dates associated with a name			2	0.01	2	1	57	1.43	0.01
$1	Real World Object URI			2	0.01	2	1	66	1.40	0.01
648 — Subject Added Entry - Chronological Term				5	0.01	5	1	6	1.31	0.00
$ind2	Thesaurus			5	0.01	5	1	6	1.31	0.00
$#	number/occurrence of field (in KBR version)			5	0.01	5	1	6	1.26	0.00
$*	Link with identifier (in KBR version)			5	0.01	5	1	6	1.31	0.00
$a	Chronological term			5	0.01	5	1	6	1.31	0.00
650 — Subject Added Entry - Topical Term				950	2.49	1,302	1	62	2.60	0.00
$ind1	Level of subject			950	2.49	1,302	1	62	2.60	0.00
$ind2	Thesaurus			950	2.49	1,302	1	62	2.60	0.00
$#	number/occurrence of field (in KBR version)			473	1.24	666	1	62	1.69	0.00
$*	Link with identifier (in KBR version)			950	2.49	1,308	1	62	2.61	0.00
$@	Language of field (in KBR version)			225	0.59	327	1	51	1.48	0.00
$a	Topical term or geographic name entry element			950	2.49	1,308	1	62	2.61	0.00
$b	Topical term following geographic name entry element			7	0.02	7	1	4	1.01	0.00
$c	Location of event			1	0.00	1	1	2	1.03	0.03
$d	Active dates			1	0.00	1	1
$g	Miscellaneous information			115	0.30	191	1	62	2.08	0.00
$v	Form subdivision			48	0.13	48	1	12	1.02	0.00
$x	General subdivision			131	0.34	260	1	16	1.44	0.01
$z	Geographic subdivision			10	0.03	13	1	10	1.76	0.01
$0	Authority record control number or standard number			227	0.60	261	1	33	2.26	0.00
$2	Source of heading or term			72	0.19	152	1	62	3.03	0.00
651 — Subject Added Entry - Geographic Name				11,983	31.45	14,395	1	17	1.10	0.00
$ind2	Thesaurus			11,983	31.45	14,395	1	17	1.10	0.00
$#	number/occurrence of field (in KBR version)			10,052	26.38	11,600	1	17	1.09	0.00
$*	Link with identifier (in KBR version)			11,983	31.45	14,395	1	17	1.10	0.00
$@	Language of field (in KBR version)			3,180	8.35	3,565	1	16	1.11	0.00
$a	Geographic name			11,983	31.45	14,395	1	17	1.10	0.00
$g	Miscellaneous information			274	0.72	457	1	9	1.56	0.03
$v	Form subdivision			4,595	12.06	10,534	1	12	2.44	0.00
$x	General subdivision			3,165	8.31	7,078	1	16	2.37	0.01
$z	Geographic subdivision			1	0.00	1	1	6	1.33	0.17
$0	Authority record control number or standard number			420	1.10	581	1	4	1.02	0.00
653 — Index Term - Uncontrolled				4	0.01	8	1	255	8.40	0.00
$ind1	Level of index term			4	0.01	8	1	255	8.40	0.00
$ind2	Type of term or name			4	0.01	8	1	255	8.40	0.00
$a	Uncontrolled term			4	0.01	8	1	255	8.40	0.00
654 — Subject Added Entry - Faceted Topical Terms				12,247	32.14	20,694	1	34	1.91	0.00
$ind1	Level of subject			12,247	32.14	20,694	1	34	1.91	0.00
$#	number/occurrence of field (in KBR version)			405	1.06	856	1	13	1.48	0.00
$*	Link with identifier (in KBR version)			12,247	32.14	21,635	1	66	2.15	0.00
$@	Language of field (in KBR version)			385	1.01	832	1	13	1.52	0.00
$a	Focus term			12,247	32.14	21,635	1	66	2.15	0.00
$b	Non-focus term			11,604	30.45	36,489	1	62	2.86	0.00
$v	Form subdivision			1	0.00	2	1	5	1.42	0.04
$2	Source of heading or term			12,245	32.13	20,691	1	34	1.92	0.00
655 — Index Term - Genre/Form				12,196	32.01	13,181	1	12	1.31	0.00
$ind1	Type of heading			12,196	32.01	13,181	1	12	1.31	0.00
$ind2	Thesaurus			12,196	32.01	13,181	1	12	1.31	0.00
$#	number/occurrence of field (in KBR version)			11,641	30.55	12,564	1	5	1.27	0.00
$*	Link with identifier (in KBR version)			12,196	32.01	13,181	1	12	1.31	0.00
$@	Language of field (in KBR version)			2,072	5.44	2,395	1	5	1.55	0.00
$a	Genre/form data or focus term			12,196	32.01	13,181	1	12	1.31	0.00
$0	Authority record control number			11,305	29.67	11,746	1	9	1.26	0.00
662 — Subject Added Entry - Hierarchical Place Name				1	0.00	1	1
$#	number/occurrence of field (in KBR version)			1	0.00	1	1
$*	Link with identifier (in KBR version)			1	0.00	1	1
$@	Language of field (in KBR version)			1	0.00	1	1
$a	Country or larger entity			1	0.00	1	1
70X-75X: Added Entry
700 — Added Entry - Personal Name				14,271	37.45	34,841	1	128	2.28	0.00
$ind1	Type of personal name entry element			14,271	37.45	34,841	1	128	2.28	0.00
$ind2	Type of added entry			14,271	37.45	34,841	1	128	2.28	0.00
$#	number/occurrence of field (in KBR version)			6,377	16.74	16,959	1	128	1.83	0.00
$*	Link with identifier (in KBR version)			14,271	37.45	34,842	1	128	2.28	0.00
$@	Language of field (in KBR version)			43	0.11	43	1	4	1.28	0.00
$a	Personal name			14,271	37.45	34,842	1	128	2.28	0.00
$b	Numeration			816	2.14	851	1	26	1.10	0.00
$c	Titles and other words associated with a name			4,009	10.52	5,135	1	90	1.59	0.00
$d	Dates associated with a name			10,637	27.91	21,990	1	125	1.76	0.00
$f	Date of a work			1	0.00	1	1	12	2.88	1.18
$g	Miscellaneous information			308	0.81	524	1	14	1.16	0.00
$j	Attribution qualifier			3	0.01	3	1	4	1.09	0.01
$n	Number of part/section of a work			1	0.00	1	1
$q	Fuller form of name			279	0.73	285	1	8	1.06	0.00
$0	Authority record control number or standard number			3	0.01	3	1	2	1.01	0.01
$1	Real World Object URI			8,612	22.60	14,479	1	121	1.93	0.00
$4	Relationship			13,062	34.28	28,335	1	128	2.34	0.00
710 — Added Entry - Corporate Name				24,348	63.90	29,502	1	28	1.14	0.00
$ind1	Type of corporate name entry element			24,348	63.90	29,502	1	28	1.14	0.00
$ind2	Type of added entry			24,348	63.90	29,502	1	28	1.14	0.00
$#	number/occurrence of field (in KBR version)			10,564	27.72	12,208	1	28	1.16	0.00
$*	Link with identifier (in KBR version)			24,348	63.90	29,502	1	28	1.14	0.00
$@	Language of field (in KBR version)			2,343	6.15	2,651	1	18	1.12	0.00
$a	Corporate name or jurisdiction name as entry element			24,348	63.90	29,502	1	28	1.14	0.00
$b	Subordinate unit			3,490	9.16	3,948	1	10	1.21	0.00
$c	Location of meeting			618	1.62	684	1	8	1.08	0.00
$d	Date of meeting or treaty signing			8,350	21.91	8,765	1	14	1.06	0.00
$f	Date of a work			2	0.01	2	1	2	1.50	0.12
$g	Miscellaneous information			9,638	25.29	11,144	1	27	1.10	0.00
$l	Language of a work			18	0.05	20	1	7	1.09	0.00
$1	Real World Object URI			3,253	8.54	3,257	1	4	1.01	0.00
$4	Relationship			23,949	62.85	27,335	1	28	1.14	0.00
720 — Added Entry - Uncontrolled Name				118	0.31	138	1	33	1.42	0.00
$ind1	Type of name			118	0.31	138	1	33	1.42	0.00
$#	number/occurrence of field (in KBR version)			118	0.31	138	1	33	1.45	0.00
$a	Name			118	0.31	138	1	33	1.42	0.00
$4	Relationship			118	0.31	138	1	33	1.45	0.00
730 — Added Entry - Uniform Title				43	0.11	88	1	11	1.32	0.01
$ind1	Nonfiling characters			43	0.11	88	1	11	1.32	0.01
$ind2	Type of added entry			43	0.11	88	1	11	1.32	0.01
$#	number/occurrence of field (in KBR version)			39	0.10	80	1	11	1.46	0.01
$*	Link with identifier (in KBR version)			43	0.11	88	1	11	1.32	0.01
$a	Uniform title			43	0.11	88	1	11	1.32	0.01
$l	Language of a work			2	0.01	2	1	11	1.89	0.03
$p	Name of part/section of a work			1	0.00	2	1	2	1.20	0.05
751 — Added Entry - Geographic Name				1	0.00	1	1	4	1.10	0.00
$#	number/occurrence of field (in KBR version)			1	0.00	1	1	4	1.10	0.00
$*	Link with identifier (in KBR version)			1	0.00	1	1	4	1.10	0.00
$a	Geographic name			1	0.00	1	1	4	1.10	0.00
76X-78X: Linking Entry
765 — Original Language Entry				4	0.01	4	1	10	1.03	0.00
$ind1	Note controller			4	0.01	4	1	10	1.03	0.00
$ind2	Display constant controller			4	0.01	4	1	10	1.03	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	10	1.04	0.00
$*	Link with identifier (in KBR version)			4	0.01	4	1	10	1.03	0.00
$t	Title			4	0.01	4	1	10	1.03	0.00
$z	International Standard Book Number			2	0.01	2	1	10	1.03	0.00
767 — Translation Entry				8	0.02	9	1	18	1.29	0.01
$ind1	Note controller			8	0.02	9	1	18	1.29	0.01
$ind2	Display constant controller			8	0.02	9	1	18	1.29	0.01
$#	number/occurrence of field (in KBR version)			6	0.02	7	1	18	1.34	0.01
$*	Link with identifier (in KBR version)			8	0.02	9	1	18	1.29	0.01
$a	Main entry heading			3	0.01	3	1	17	1.30	0.01
$t	Title			8	0.02	9	1	18	1.29	0.01
$z	International Standard Book Number			1	0.00	2	1	14	1.28	0.01
770 — Supplement/Special Issue Entry				5	0.01	5	1	10	1.33	0.03
$ind1	Note controller			5	0.01	5	1	10	1.33	0.03
$ind2	Display constant controller			5	0.01	5	1	10	1.33	0.03
$#	number/occurrence of field (in KBR version)			4	0.01	4	1	10	1.37	0.08
$*	Link with identifier (in KBR version)			5	0.01	5	1	10	1.33	0.03
$g	Related parts			1	0.00	1	1	2	1.04	0.04
$t	Title			5	0.01	5	1	10	1.33	0.03
772 — Supplement Parent Entry				17	0.04	17	1	9	1.03	0.01
$ind1	Note controller			17	0.04	17	1	9	1.03	0.01
$ind2	Display constant controller			17	0.04	17	1	9	1.03	0.01
$#	number/occurrence of field (in KBR version)			13	0.03	13	1	2	1.01	0.00
$*	Link with identifier (in KBR version)			17	0.04	17	1	9	1.03	0.01
$a	Main entry heading			3	0.01	3	1
$g	Related parts			6	0.02	6	1	2	1.70	0.00
$t	Title			17	0.04	17	1	9	1.03	0.01
$z	International Standard Book Number			1	0.00	1	1
773 — Host Item Entry				27,162	71.28	27,468	1	6	1.05	0.00
$ind1	Note controller			27,162	71.28	27,468	1	6	1.05	0.00
$ind2	Display constant controller			27,162	71.28	27,468	1	6	1.05	0.00
$#	number/occurrence of field (in KBR version)			22,782	59.79	22,882	1	6	1.06	0.00
$*	Link with identifier (in KBR version)			27,162	71.28	27,468	1	6	1.05	0.00
$a	Main entry heading			4,385	11.51	4,385	1	5	1.01	0.00
$b	Edition			2,530	6.64	2,562	1	3	1.03	0.00
$g	Related parts			26,817	70.38	27,100	1	6	1.04	0.00
$h	Physical description			13,377	35.11	13,406	1	2	1.00	0.00
$n	Note			6,344	16.65	6,596	1	4	1.01	0.00
$r	Report number			1	0.00	1	1
$t	Title			27,162	71.28	27,468	1	6	1.05	0.00
$z	International Standard Book Number			75	0.20	75	1	6	1.01	0.00
775 — Other Edition Entry				235	0.62	574	1	25	1.98	0.00
$ind1	Note controller			235	0.62	574	1	25	1.98	0.00
$ind2	Display constant controller			235	0.62	574	1	25	1.98	0.00
$#	number/occurrence of field (in KBR version)			180	0.47	466	1	25	2.22	0.00
$*	Link with identifier (in KBR version)			235	0.62	574	1	25	1.98	0.00
$a	Main entry heading			152	0.40	331	1	22	2.06	0.00
$i	Relationship information			41	0.11	70	1	23	1.98	0.00
$t	Title			235	0.62	574	1	25	1.98	0.00
$z	International Standard Book Number			137	0.36	285	1	25	2.17	0.00
776 — Additional Physical Form Entry				2	0.01	2	1	12	1.04	0.00
$ind1	Note controller			2	0.01	2	1	12	1.04	0.00
$ind2	Display constant controller			2	0.01	2	1	12	1.04	0.00
$*	Link with identifier (in KBR version)			2	0.01	2	1	12	1.04	0.00
$a	Main entry heading			2	0.01	2	1	8	1.03	0.00
$t	Title			2	0.01	2	1	12	1.04	0.00
$z	International Standard Book Number			2	0.01	2	1	12	1.04	0.00
777 — Issued With Entry				37	0.10	37	1	10	1.70	0.01
$ind1	Note controller			37	0.10	37	1	10	1.70	0.01
$ind2	Display constant controller			37	0.10	37	1	10	1.70	0.01
$#	number/occurrence of field (in KBR version)			21	0.06	21	1	10	1.76	0.01
$*	Link with identifier (in KBR version)			37	0.10	37	1	10	1.70	0.01
$a	Main entry heading			17	0.04	17	1	10	1.85	0.02
$t	Title			37	0.10	37	1	10	1.70	0.01
780 — Preceding Entry				1	0.00	1	1	9	1.06	0.00
$ind1	Note controller			1	0.00	1	1	9	1.06	0.00
$ind2	Type of relationship			1	0.00	1	1	9	1.06	0.00
$*	Link with identifier (in KBR version)			1	0.00	1	1	9	1.06	0.00
$a	Main entry heading			1	0.00	1	1	2	1.04	0.00
$t	Title			1	0.00	1	1	9	1.06	0.00
785 — Succeeding Entry				1	0.00	1	1	15	1.06	0.00
$ind1	Note controller			1	0.00	1	1	15	1.06	0.00
$ind2	Type of relationship			1	0.00	1	1	15	1.06	0.00
$*	Link with identifier (in KBR version)			1	0.00	1	1	15	1.06	0.00
$a	Main entry heading			1	0.00	1	1	2	1.04	0.01
$t	Title			1	0.00	1	1	15	1.06	0.00
786 — Data Source Entry				4	0.01	4	1	7	1.41	0.00
$ind1	Note controller			4	0.01	4	1	7	1.41	0.00
$ind2	Display constant controller			4	0.01	4	1	7	1.41	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	7	1.42	0.00
$*	Link with identifier (in KBR version)			4	0.01	4	1	7	1.41	0.00
$a	Main entry heading			3	0.01	3	1	4	1.25	0.00
$g	Related parts			2	0.01	2	1	7	1.51	0.00
$t	Title			4	0.01	4	1	7	1.41	0.00
$z	International Standard Book Number			1	0.00	1	1	4	1.21	0.00
787 — Other Relationship Entry				68	0.18	154	1	15	1.08	0.00
$ind1	Note controller			68	0.18	154	1	15	1.08	0.00
$ind2	Display constant controller			68	0.18	154	1	15	1.08	0.00
$#	number/occurrence of field (in KBR version)			19	0.05	24	1	15	1.10	0.00
$*	Link with identifier (in KBR version)			68	0.18	154	1	15	1.09	0.00
$a	Main entry heading			16	0.04	16	1	11	1.31	0.01
$g	Related parts			9	0.02	9	1	15	1.03	0.00
$i	Relationship information			11	0.03	13	1	4	1.03	0.00
$t	Title			68	0.18	154	1	15	1.09	0.00
$z	International Standard Book Number			1	0.00	1	1	12	1.19	0.01
80X-83X: Series Added Entry
800 — Series Added Entry - Personal Name				7	0.02	7	1	2	1.00	0.00
$ind1	Type of personal name entry element			7	0.02	7	1	2	1.00	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1
$*	Link with identifier (in KBR version)			7	0.02	7	1	2	1.00	0.00
$a	Personal name			7	0.02	7	1	2	1.00	0.00
830 — Series Added Entry - Uniform Title				1	0.00	1	1	20	2.16	0.14
$ind2	Nonfiling characters			1	0.00	1	1	20	2.16	0.14
$#	number/occurrence of field (in KBR version)			1	0.00	1	1	20	2.20	0.14
$*	Link with identifier (in KBR version)			1	0.00	1	1	20	2.16	0.14
$a	Uniform title			1	0.00	1	1	20	2.16	0.14
841-88X: Holdings, Location, Alternate Graphics
856 — Electronic Location and Access				10,364	27.20	12,637	1	51	1.08	0.00
$ind1	Access method			10,364	27.20	12,637	1	51	1.08	0.00
$ind2	Relationship			10,364	27.20	12,637	1	51	1.08	0.00
$#	number/occurrence of field (in KBR version)			3,513	9.22	3,857	1	45	1.07	0.00
$a	Host name			5	0.01	5	1	2	1.08	0.08
$u	Uniform Resource Identifier			10,360	27.19	12,631	1	51	1.08	0.00
$y	Link text			16	0.04	27	1	51	2.04	0.03
$z	Public note			275	0.72	275	1	10	1.01	0.00
$7	Access status			10,268	26.95	12,535	1	51	1.10	0.00
880 — Alternate Graphic Representation				1	0.00	1	1	6	1.10	0.00
$#	number/occurrence of field (in KBR version)			1	0.00	1	1	6	1.10	0.00
$a	Same as associated field			1	0.00	1	1	6	1.10	0.00
$6	Linkage			1	0.00	1	1	6	1.10	0.00
Holdings: MARC Holdings tags
866 — Textual Holdings-Basic Bibliographic Unit				3	0.01	3	1	7	1.47	0.00
$ind1	Field encoding level			3	0.01	3	1	7	1.47	0.00
$ind2	Type of notation			3	0.01	3	1	7	1.47	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	7	1.33	0.00
$a	Textual holdings			3	0.01	3	1	7	1.47	0.00
OCLCMARC tags
911 — Manifestation identifier				7,736	20.30	7,736	1	4	1.00	0.00
$ind1				26	0.07	26	1	2	1.00	0.00
$#				2,593	6.80	2,593	1	4	1.00	0.00
$a				7,736	20.30	7,932	1	8	1.04	0.00
Locally defined tags of the Royal Library of Belgium
997 — Item information				37,977	99.66	41,977	1	254	1.14	0.00
$#	number/occurrence of field			3,054	8.01	3,319	1	16	1.28	0.00
$*	Link with identifier			37,977	99.66	41,977	1	254	1.14	0.00
$a	Barcode number			37,977	99.66	41,977	1	254	1.14	0.00
$c	Library (holding institution)			37,977	99.66	41,977	1	254	1.14	0.00
$d	Section (department of holding institution)			37,977	99.66	41,978	1	254	1.14	0.00
$g	Call Number			37,603	98.68	41,570	1	254	1.14	0.00
$h	Rating2			1	0.00	1	1	2	1.02	0.00
$t	Document type			37,977	99.66	41,977	1	254	1.14	0.00
$v	inventory number			8,824	23.16	9,188	1	20	1.08	0.00
unknown origin
867				2	0.01	2	1	3	1.12	0.04
$#				2	0.01	2	1	3	1.12	0.04
$a				1	0.00	1	1	3	1.12	0.04
$x				1	0.00	1	1	3	1.06	0.06
877				1	0.00	1	1
$#				1	0.00	1	1
$l				1	0.00	1	1