QA catalogue for analysing library data

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

number of records: 37,868

Fields		fields	pos./subf.		count	%
Fields defined in MARC21
00X	Control Fields	2	39		37,868	100.00
01X-09X	Numbers and Code	16	68		37,836	99.92
1XX	Main Entry	3	30		27,288	72.06
20X-24X	Title	6	42		37,866	99.99
25X-28X	Edition, Imprint	6	25		37,793	99.80
3XX	Physical Description	8	36		37,582	99.24
4XX	Series Statement	1	4		41	0.11
5XX	Note	18	71		28,691	75.77
6XX	Subject Access	8	59		30,179	79.70
70X-75X	Added Entry	5	45		30,263	79.92
76X-78X	Linking Entry	12	86		27,238	71.93
80X-83X	Series Added Entry	2	8		8	0.02
841-88X	Holdings, Location, Alternate Graphics	2	11		10,197	26.93
Holdings	MARC Holdings tags	1	4		3	0.01
Fields defined in extensions of MARC
OCLC	OCLCMARC tags	1	3		7,725	20.40
KBR	Locally defined tags of the Royal Library of Belgium	1	9		37,741	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			37,868	100.00	37,868	1
05	Record status			37,868	100.00	37,868	1
06	Type of record			37,868	100.00	37,868	1
07	Bibliographic level			37,868	100.00	37,868	1
08	Type of control			37,868	100.00	37,868	1
09	Character coding scheme			37,868	100.00	37,868	1
10	Indicator count			37,868	100.00	37,868	1
11	Subfield code count			37,868	100.00	37,868	1
12	Base address of data			37,868	100.00	37,868	1
17	Encoding level			37,868	100.00	37,868	1
18	Descriptive cataloging form			37,868	100.00	37,868	1
19	Multipart resource record level			37,868	100.00	37,868	1
20	Length of the length-of-field portion			37,868	100.00	37,868	1
21	Length of the starting-character-position portion			37,868	100.00	37,868	1
22	Length of the implementation-defined portion			37,868	100.00	37,868	1
23	Undefined			37,868	100.00	37,868	1
001 — Control Number				37,868	100.00	37,868	1
005 — Date and Time of Latest Transaction				4	0.01	4	1
007 — Physical Description
Common
00	Category of material			5,766	15.23	5,766	1	2	1.05	0.00
Map
01	Specific material designation			5,761	15.21	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			35,413	93.52	35,413	1
06	Type of date/Publication status			35,413	93.52	35,413	1
07	Date 1			35,413	93.52	35,413	1
11	Date 2			35,413	93.52	35,413	1
15	Place of publication, production, or execution			35,413	93.52	35,413	1
35	Language			35,174	92.89	35,174	1
38	Modified record			35,171	92.88	35,171	1
39	Cataloging source			35,171	92.88	35,171	1
Maps
18	Relief			35,413	93.52	35,413	1
22	Projection			35,413	93.52	35,413	1
25	Type of cartographic material			35,174	92.89	35,174	1
28	Government publication			35,174	92.89	35,174	1
29	Form of item			35,174	92.89	35,174	1
31	Index			35,174	92.89	35,174	1
33	Special format characteristics			35,174	92.89	35,174	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				2,393	6.32	2,417	1	254	1.03	0.00
$ind2	Display constant controller			2,393	6.32	2,417	1	254	1.03	0.00
$#	number/occurrence of field (in KBR version)			1,178	3.11	1,183	1	45	1.01	0.00
$a	Copyright or legal deposit number			1,831	4.84	1,855	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	1.47	557	1	4	1.01	0.00
020 — International Standard Book Number				2,529	6.68	2,545	1	200	1.04	0.00
$#	number/occurrence of field (in KBR version)			1,145	3.02	1,152	1	84	1.03	0.00
$a	International Standard Book Number			1,270	3.35	1,285	1	100	1.04	0.00
$c	Terms of availability			1,805	4.77	1,806	1	63	1.01	0.00
$q	Qualifying information			436	1.15	436	1	84	1.11	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	1.00	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				5,383	14.22	5,397	1	3	1.00	0.00
$ind1	Type of scale			5,383	14.22	5,397	1	3	1.00	0.00
$ind2	Type of ring			5,383	14.22	5,397	1	3	1.00	0.00
$#	number/occurrence of field (in KBR version)			5,256	13.88	5,266	1	2	1.00	0.00
$a	Category of scale			5,352	14.13	5,366	1	3	1.00	0.00
$b	Constant ratio linear horizontal scale			202	0.53	206	1	3	1.01	0.01
$d	Coordinates - westernmost longitude			294	0.78	302	1	3	1.03	0.01
$e	Coordinates - easternmost longitude			230	0.61	238	1	3	1.03	0.01
$f	Coordinates - northernmost latitude			230	0.61	238	1	3	1.03	0.01
$g	Coordinates - southernmost latitude			230	0.61	238	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				37,834	99.91	37,842	1	4	1.00	0.00
$#	number/occurrence of field (in KBR version)			24,159	63.80	24,167	1	4	1.00	0.00
$a	Original cataloging agency			37,834	99.91	37,842	1	4	1.00	0.00
$b	Language of cataloging			13,153	34.73	13,153	1	4	1.00	0.00
$c	Transcribing agency			7	0.02	7	1
$d	Modifying agency			8	0.02	13	1	30	1.23	0.01
$e	Description conventions			12,595	33.26	12,595	1	4	1.00	0.00
041 — Language Code				35,059	92.58	35,074	1	5	1.00	0.00
$ind1	Translation indication			35,059	92.58	35,074	1	5	1.00	0.00
$ind2	Source of code			35,059	92.58	35,074	1	5	1.00	0.00
$#	number/occurrence of field (in KBR version)			21,105	55.73	21,120	1	5	1.00	0.00
$a	Language code of text/sound track or separate title			35,059	92.58	36,380	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	1.12	0.00
044 — Country of Publishing/Producing Entity Code				35,042	92.54	35,044	1	4	1.00	0.00
$#	number/occurrence of field (in KBR version)			21,218	56.03	21,220	1	4	1.00	0.00
$a	MARC country code			35,042	92.54	37,903	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				12,251	32.35	12,256	1	4	1.00	0.00
$ind1	Type of personal name entry element			12,251	32.35	12,256	1	4	1.00	0.00
$#	number/occurrence of field (in KBR version)			5,366	14.17	5,371	1	4	1.00	0.00
$*	Link with identifier (in KBR version)			12,251	32.35	12,256	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			12,251	32.35	12,256	1	4	1.00	0.00
$b	Numeration			269	0.71	269	1	2	1.00	0.00
$c	Titles and words associated with a name			2,371	6.26	2,396	1	9	1.03	0.00
$d	Dates associated with a name			10,684	28.21	10,690	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	0.86	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			7,311	19.31	7,312	1	4	1.00	0.00
$4	Relationship			5,540	14.63	5,914	1	6	1.05	0.00
110 — Main Entry - Corporate Name				15,455	40.81	15,700	1	3	1.00	0.00
$ind1	Type of corporate name entry element			15,455	40.81	15,700	1	3	1.00	0.00
$#	number/occurrence of field (in KBR version)			5,612	14.82	5,789	1	3	1.01	0.00
$*	Link with identifier (in KBR version)			15,455	40.81	15,700	1	3	1.00	0.00
$@	Language of field (in KBR version)			1,092	2.88	1,256	1	3	1.03	0.00
$a	Corporate name or jurisdiction name as entry element			15,454	40.81	15,699	1	3	1.00	0.00
$b	Subordinate unit			1,129	2.98	1,299	1	5	1.21	0.00
$c	Location of meeting			364	0.96	364	1	3	1.03	0.00
$d	Date of meeting or treaty signing			4,639	12.25	4,639	1
$g	Miscellaneous information			9,803	25.89	9,817	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			8,309	21.94	15,550	1	6	1.21	0.00
130 — Main Entry - Uniform Title				131	0.35	131	1
$ind1	Nonfiling characters			131	0.35	131	1
$#	number/occurrence of field (in KBR version)			131	0.35	131	1
$*	Link with identifier (in KBR version)			131	0.35	131	1
$a	Uniform title			131	0.35	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				1,096	2.89	1,096	1
$ind1	Uniform title printed or displayed			1,096	2.89	1,096	1
$ind2	Nonfiling characters			1,096	2.89	1,096	1
$#	number/occurrence of field (in KBR version)			334	0.88	334	1
$*	Link with identifier (in KBR version)			1,096	2.89	1,096	1
$a	Uniform title			1,096	2.89	1,096	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				37,866	99.99	37,868	1	4	1.01	0.00
$ind1	Title added entry			37,866	99.99	37,868	1	4	1.01	0.00
$ind2	Nonfiling characters			37,866	99.99	37,868	1	4	1.01	0.00
$#	number/occurrence of field (in KBR version)			25,628	67.68	25,630	1	4	1.02	0.00
$a	Title			37,866	99.99	37,868	1	9	1.01	0.00
$b	Remainder of title			12,444	32.86	12,444	1	10	1.00	0.00
$c	Statement of responsibility, etc.			21,597	57.03	21,599	1	4	1.00	0.00
$h	Medium			25,488	67.31	25,490	1	3	1.01	0.00
$n	Number of part/section of a work			610	1.61	633	1	25	1.10	0.00
$p	Name of part/section of a work			116	0.31	135	1	48	1.12	0.00
$6	Linkage			1	0.00	1	1
246 — Varying Form of Title				2,272	6.00	2,951	1	24	1.21	0.00
$ind1	Note/added entry controller			2,272	6.00	2,951	1	24	1.21	0.00
$ind2	Type of title			2,272	6.00	2,951	1	24	1.21	0.00
$#	number/occurrence of field (in KBR version)			919	2.43	1,138	1	24	1.33	0.00
$@	Language of field (in KBR version)			35	0.09	35	1	5	1.92	0.00
$a	Title proper/short title			2,260	5.97	2,939	1	24	1.21	0.00
$b	Remainder of title			586	1.55	741	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	1.82	0.15
$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	1.10	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				4,276	11.29	4,580	1	4	1.01	0.00
$#	number/occurrence of field (in KBR version)			3,309	8.74	3,612	1	4	1.02	0.00
$@	Language of field (in KBR version)			150	0.40	310	1	3	2.02	0.00
$a	Edition statement			4,276	11.29	4,580	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				29,863	78.86	29,960	1	5	1.00	0.00
$#	number/occurrence of field (in KBR version)			18,519	48.90	18,557	1	4	1.00	0.00
$a	Statement of scale			29,291	77.35	29,373	1	5	1.00	0.00
$b	Statement of projection			887	2.34	887	1
$c	Statement of coordinates			3,359	8.87	3,381	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				37,599	99.29	43,903	1	33	1.05	0.00
$ind1	Sequence of statements			37,599	99.29	43,903	1	33	1.05	0.00
$ind2	Function of entity			37,599	99.29	43,903	1	33	1.05	0.00
$#	number/occurrence of field (in KBR version)			24,086	63.61	27,022	1	30	1.05	0.00
$@	Language of field (in KBR version)			1,854	4.90	1,860	1	3	1.01	0.00
$a	Place of production, publication, distribution, manufacture			34,496	91.10	37,581	1	22	1.13	0.00
$b	Name of producer, publisher, distributor, manufacturer			34,436	90.94	38,085	1	28	1.07	0.00
$c	Date of production, publication, distribution, manufacture, or copyright notice			37,476	98.96	43,361	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				37,409	98.79	37,458	1	10	1.03	0.00
$#	number/occurrence of field (in KBR version)			23,851	62.98	23,885	1	10	1.05	0.00
$a	Extent			36,884	97.40	36,893	1	10	1.01	0.00
$b	Other physical details			26,852	70.91	26,884	1	10	1.01	0.00
$c	Dimensions			35,859	94.69	35,870	1	4	1.00	0.00
$e	Accompanying material			1,058	2.79	1,058	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				21,333	56.34	21,334	1	3	1.01	0.00
$#	number/occurrence of field (in KBR version)			9,490	25.06	9,491	1	3	1.01	0.00
$a	Content type term			21,333	56.34	23,687	1	6	1.23	0.00
$b	Content type code			16	0.04	16	1	3	1.06	0.01
$2	Source			21,272	56.17	21,273	1	3	1.00	0.00
337 — Media Type				21,333	56.34	21,333	1	2	1.00	0.00
$#	number/occurrence of field (in KBR version)			9,490	25.06	9,490	1	2	1.00	0.00
$a	Media type term			21,333	56.34	21,333	1	2	1.00	0.00
$b	Media type code			16	0.04	16	1
$2	Source			21,272	56.17	21,272	1	2	1.00	0.00
338 — Carrier Type				21,341	56.36	21,341	1	2	1.00	0.00
$#	number/occurrence of field (in KBR version)			9,498	25.08	9,498	1	2	1.00	0.00
$a	Carrier type term			21,282	56.20	21,282	1	2	1.00	0.00
$b	Carrier type code			1	0.00	1	1	2	1.00	0.00
$2	Source			21,286	56.21	21,286	1	2	1.00	0.00
340 — Physical Medium				29	0.08	29	1	8	1.00	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				41	0.11	41	1	5	1.01	0.00
$ind1	Series tracing policy			41	0.11	41	1	5	1.01	0.00
$#	number/occurrence of field (in KBR version)			24	0.06	24	1	3	1.02	0.00
$a	Series statement			41	0.11	44	1	5	1.02	0.00
$v	Volume/sequential designation			30	0.08	31	1	8	1.45	0.00
5XX: Note
500 — General Note				19,054	50.32	27,332	1	76	1.34	0.00
$#	number/occurrence of field (in KBR version)			14,366	37.94	21,483	1	76	1.26	0.00
$@	Language of field (in KBR version)			1	0.00	1	1	3	1.09	0.00
$a	General note			19,054	50.32	27,331	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	8	1.04	0.00
$#	number/occurrence of field (in KBR version)			10	0.03	10	1	8	1.04	0.00
$a	Bibliography, etc. note			10	0.03	10	1	8	1.04	0.00
505 — Formatted Contents Note				1,861	4.91	1,971	1	214	3.16	0.02
$ind1	Display constant controller			1,861	4.91	1,971	1	214	3.16	0.02
$ind2	Level of content designation			1,861	4.91	1,971	1	214	3.16	0.02
$#	number/occurrence of field (in KBR version)			778	2.05	826	1	214	2.73	0.06
$a	Formatted contents note			391	1.03	443	1	35	1.88	0.02
$g	Miscellaneous information			1	0.00	1	1	291	25.94	1.37
$r	Statement of responsibility			3	0.01	3	1	84	4.57	0.05
$t	Title			1,475	3.90	1,590	1	214	4.72	0.03
510 — Citation/References Note				3,288	8.68	3,592	1	10	1.14	0.00
$ind1	Coverage/location in source			3,288	8.68	3,592	1	10	1.14	0.00
$#	number/occurrence of field (in KBR version)			1,024	2.70	1,150	1	10	1.26	0.00
$a	Name of source			3,288	8.68	3,592	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	0.01
$#	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	0.01
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				6,082	16.06	6,339	1	3	1.01	0.00
$ind1	Privacy			6,082	16.06	6,339	1	3	1.01	0.00
$#	number/occurrence of field (in KBR version)			6,082	16.06	6,082	1	3	1.02	0.00
$a	Source of acquisition			6,080	16.06	6,337	1	3	1.01	0.00
$b	Address			5,511	14.55	5,511	1
$c	Method of acquisition			6,065	16.02	6,065	1
$d	Date of acquisition			5,368	14.18	5,368	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	1.10	0.02
$ind1	Type of data			2	0.01	2	1	2	1.10	0.02
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	2	1.10	0.05
$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	1.16	0.00
$ind1	Privacy			26	0.07	29	1	6	1.16	0.00
$#	number/occurrence of field (in KBR version)			26	0.07	29	1	6	1.14	0.00
$a	History			26	0.07	29	1	6	1.16	0.00
562 — Copy and Version Identification Note				12,427	32.82	13,283	1	12	1.13	0.00
$#	number/occurrence of field (in KBR version)			9,439	24.93	10,042	1	12	1.12	0.00
$a	Identifying markings			6,246	16.49	6,715	1	5	1.05	0.00
$b	Copy identification			6,225	16.44	6,579	1	12	1.15	0.00
$c	Version identification			755	1.99	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				5,055	13.35	5,146	1	3	1.02	0.00
$ind1	Privacy			5,055	13.35	5,146	1	3	1.02	0.00
$#	number/occurrence of field (in KBR version)			5,052	13.34	5,143	1	3	1.02	0.00
$x	Nonpublic note			2	0.01	2	1
$2	Source of term			5,053	13.34	5,144	1	3	1.02	0.00
$5	Institution to which field applies			5,052	13.34	5,143	1	3	1.02	0.00
6XX: Subject Access
600 — Subject Added Entry - Personal Name				2	0.01	3	1	125	1.70	0.02
$ind1	Type of personal name entry element			2	0.01	3	1	125	1.70	0.02
$ind2	Thesaurus			2	0.01	3	1	125	1.70	0.02
$#	number/occurrence of field (in KBR version)			2	0.01	3	1	114	1.49	0.02
$*	Link with identifier (in KBR version)			2	0.01	3	1	125	1.70	0.02
$a	Personal name			2	0.01	3	1	125	1.70	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	1.32	0.00
$ind2	Thesaurus			5	0.01	5	1	6	1.32	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	1.32	0.00
$a	Chronological term			5	0.01	5	1	6	1.32	0.00
650 — Subject Added Entry - Topical Term				930	2.46	1,277	1	81	2.60	0.00
$ind1	Level of subject			930	2.46	1,277	1	81	2.60	0.00
$ind2	Thesaurus			930	2.46	1,277	1	81	2.60	0.00
$#	number/occurrence of field (in KBR version)			455	1.20	644	1	81	1.69	0.00
$*	Link with identifier (in KBR version)			930	2.46	1,283	1	81	2.61	0.00
$@	Language of field (in KBR version)			184	0.49	284	1	51	1.49	0.00
$a	Topical term or geographic name entry element			930	2.46	1,283	1	81	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	81	2.11	0.00
$v	Form subdivision			48	0.13	48	1	12	1.02	0.00
$x	General subdivision			130	0.34	258	1	16	1.45	0.01
$z	Geographic subdivision			10	0.03	13	1	10	1.77	0.01
$0	Authority record control number or standard number			209	0.55	240	1	27	2.23	0.00
$2	Source of heading or term			72	0.19	152	1	81	3.03	0.00
651 — Subject Added Entry - Geographic Name				11,871	31.35	14,209	1	17	1.10	0.00
$ind2	Thesaurus			11,871	31.35	14,209	1	17	1.10	0.00
$#	number/occurrence of field (in KBR version)			9,940	26.25	11,414	1	17	1.09	0.00
$*	Link with identifier (in KBR version)			11,871	31.35	14,209	1	17	1.10	0.00
$@	Language of field (in KBR version)			3,049	8.05	3,358	1	6	1.11	0.00
$a	Geographic name			11,871	31.35	14,209	1	17	1.10	0.00
$g	Miscellaneous information			240	0.63	386	1	9	1.51	0.04
$v	Form subdivision			4,623	12.21	10,616	1	12	2.45	0.00
$x	General subdivision			3,189	8.42	7,141	1	16	2.38	0.01
$z	Geographic subdivision			1	0.00	1	1	6	1.34	0.17
$0	Authority record control number or standard number			380	1.00	508	1	4	1.02	0.00
653 — Index Term - Uncontrolled				4	0.01	8	1	255	8.41	0.00
$ind1	Level of index term			4	0.01	8	1	255	8.41	0.00
$ind2	Type of term or name			4	0.01	8	1	255	8.41	0.00
$a	Uncontrolled term			4	0.01	8	1	255	8.41	0.00
654 — Subject Added Entry - Faceted Topical Terms				12,192	32.20	20,541	1	34	1.91	0.00
$ind1	Level of subject			12,192	32.20	20,541	1	34	1.91	0.00
$#	number/occurrence of field (in KBR version)			329	0.87	632	1	13	1.45	0.00
$*	Link with identifier (in KBR version)			12,192	32.20	21,459	1	66	2.15	0.00
$@	Language of field (in KBR version)			309	0.82	608	1	13	1.47	0.01
$a	Focus term			12,192	32.20	21,459	1	66	2.15	0.00
$b	Non-focus term			11,552	30.51	36,290	1	62	2.87	0.00
$v	Form subdivision			1	0.00	2	1	5	1.42	0.04
$2	Source of heading or term			12,190	32.19	20,538	1	34	1.92	0.00
655 — Index Term - Genre/Form				12,141	32.06	13,124	1	12	1.30	0.00
$ind1	Type of heading			12,141	32.06	13,124	1	12	1.30	0.00
$ind2	Thesaurus			12,141	32.06	13,124	1	12	1.30	0.00
$#	number/occurrence of field (in KBR version)			11,585	30.59	12,506	1	5	1.26	0.00
$*	Link with identifier (in KBR version)			12,141	32.06	13,124	1	12	1.31	0.00
$@	Language of field (in KBR version)			2,002	5.29	2,323	1	5	1.59	0.00
$a	Genre/form data or focus term			12,141	32.06	13,124	1	12	1.31	0.00
$0	Authority record control number			11,260	29.73	11,701	1	9	1.25	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				14,205	37.51	34,647	1	128	2.27	0.00
$ind1	Type of personal name entry element			14,205	37.51	34,647	1	128	2.27	0.00
$ind2	Type of added entry			14,205	37.51	34,647	1	128	2.27	0.00
$#	number/occurrence of field (in KBR version)			6,295	16.62	16,740	1	128	1.81	0.00
$*	Link with identifier (in KBR version)			14,205	37.51	34,648	1	128	2.27	0.00
$@	Language of field (in KBR version)			43	0.11	43	1	4	1.30	0.00
$a	Personal name			14,205	37.51	34,648	1	128	2.27	0.00
$b	Numeration			815	2.15	850	1	26	1.10	0.00
$c	Titles and other words associated with a name			3,982	10.52	5,090	1	90	1.58	0.00
$d	Dates associated with a name			10,564	27.90	21,805	1	125	1.76	0.00
$f	Date of a work			1	0.00	1	1	12	2.88	1.18
$g	Miscellaneous information			307	0.81	523	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	0.74	285	1	8	1.07	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			8,561	22.61	14,318	1	120	1.93	0.00
$4	Relationship			13,014	34.37	28,273	1	128	2.33	0.00
710 — Added Entry - Corporate Name				24,181	63.86	29,310	1	28	1.13	0.00
$ind1	Type of corporate name entry element			24,181	63.86	29,310	1	28	1.13	0.00
$ind2	Type of added entry			24,181	63.86	29,310	1	28	1.13	0.00
$#	number/occurrence of field (in KBR version)			10,401	27.47	12,030	1	28	1.16	0.00
$*	Link with identifier (in KBR version)			24,181	63.86	29,310	1	28	1.13	0.00
$@	Language of field (in KBR version)			2,276	6.01	2,580	1	18	1.12	0.00
$a	Corporate name or jurisdiction name as entry element			24,181	63.86	29,310	1	28	1.13	0.00
$b	Subordinate unit			3,480	9.19	3,933	1	10	1.21	0.00
$c	Location of meeting			602	1.59	668	1	8	1.09	0.00
$d	Date of meeting or treaty signing			8,317	21.96	8,724	1	14	1.06	0.00
$f	Date of a work			2	0.01	2	1	2	1.50	0.12
$g	Miscellaneous information			9,569	25.27	11,069	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			3,252	8.59	3,256	1	4	1.01	0.00
$4	Relationship			23,803	62.86	27,134	1	28	1.14	0.00
720 — Added Entry - Uncontrolled Name				118	0.31	138	1	33	1.41	0.00
$ind1	Type of name			118	0.31	138	1	33	1.41	0.00
$#	number/occurrence of field (in KBR version)			118	0.31	138	1	33	1.44	0.00
$a	Name			118	0.31	138	1	33	1.41	0.00
$4	Relationship			118	0.31	138	1	33	1.45	0.00
730 — Added Entry - Uniform Title				42	0.11	86	1	11	1.32	0.01
$ind1	Nonfiling characters			42	0.11	86	1	11	1.32	0.01
$ind2	Type of added entry			42	0.11	86	1	11	1.32	0.01
$#	number/occurrence of field (in KBR version)			38	0.10	78	1	11	1.46	0.01
$*	Link with identifier (in KBR version)			42	0.11	86	1	11	1.32	0.01
$a	Uniform title			42	0.11	86	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	3	1.12	0.00
$#	number/occurrence of field (in KBR version)			1	0.00	1	1	3	1.12	0.00
$*	Link with identifier (in KBR version)			1	0.00	1	1	3	1.12	0.00
$a	Geographic name			1	0.00	1	1	3	1.12	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	1.03	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	1.31	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	0.04
$ind1	Note controller			5	0.01	5	1	10	1.33	0.04
$ind2	Display constant controller			5	0.01	5	1	10	1.33	0.04
$#	number/occurrence of field (in KBR version)			4	0.01	4	1	10	1.39	0.08
$*	Link with identifier (in KBR version)			5	0.01	5	1	10	1.33	0.04
$g	Related parts			1	0.00	1	1	2	1.04	0.04
$t	Title			5	0.01	5	1	10	1.33	0.04
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				27,029	71.38	27,334	1	6	1.05	0.00
$ind1	Note controller			27,029	71.38	27,334	1	6	1.05	0.00
$ind2	Display constant controller			27,029	71.38	27,334	1	6	1.05	0.00
$#	number/occurrence of field (in KBR version)			22,647	59.81	22,746	1	6	1.06	0.00
$*	Link with identifier (in KBR version)			27,029	71.38	27,334	1	6	1.05	0.00
$a	Main entry heading			4,337	11.45	4,337	1	5	1.01	0.00
$b	Edition			2,529	6.68	2,561	1	3	1.03	0.00
$g	Related parts			26,690	70.48	26,972	1	6	1.04	0.00
$h	Physical description			13,371	35.31	13,400	1	2	1.00	0.00
$n	Note			6,341	16.75	6,593	1	4	1.01	0.00
$r	Report number			1	0.00	1	1
$t	Title			27,029	71.38	27,334	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	1.96	0.00
$ind1	Note controller			235	0.62	574	1	25	1.96	0.00
$ind2	Display constant controller			235	0.62	574	1	25	1.96	0.00
$#	number/occurrence of field (in KBR version)			180	0.48	466	1	25	2.21	0.00
$*	Link with identifier (in KBR version)			235	0.62	574	1	25	1.96	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	1.95	0.00
$t	Title			235	0.62	574	1	25	1.96	0.00
$z	International Standard Book Number			137	0.36	285	1	25	2.15	0.00
776 — Additional Physical Form Entry				2	0.01	2	1	8	1.03	0.00
$ind1	Note controller			2	0.01	2	1	8	1.03	0.00
$ind2	Display constant controller			2	0.01	2	1	8	1.03	0.00
$*	Link with identifier (in KBR version)			2	0.01	2	1	8	1.03	0.00
$a	Main entry heading			2	0.01	2	1	8	1.03	0.00
$t	Title			2	0.01	2	1	8	1.03	0.00
$z	International Standard Book Number			2	0.01	2	1	8	1.04	0.00
777 — Issued With Entry				37	0.10	37	1	10	1.80	0.01
$ind1	Note controller			37	0.10	37	1	10	1.80	0.01
$ind2	Display constant controller			37	0.10	37	1	10	1.80	0.01
$#	number/occurrence of field (in KBR version)			21	0.06	21	1	10	1.90	0.01
$*	Link with identifier (in KBR version)			37	0.10	37	1	10	1.80	0.01
$a	Main entry heading			17	0.04	17	1	10	2.04	0.02
$t	Title			37	0.10	37	1	10	1.80	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	1.03	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	1.42	0.00
$ind1	Note controller			4	0.01	4	1	7	1.42	0.00
$ind2	Display constant controller			4	0.01	4	1	7	1.42	0.00
$#	number/occurrence of field (in KBR version)			2	0.01	2	1	7	1.43	0.00
$*	Link with identifier (in KBR version)			4	0.01	4	1	7	1.42	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	1.52	0.00
$t	Title			4	0.01	4	1	7	1.42	0.00
$z	International Standard Book Number			1	0.00	1	1	4	1.22	0.00
787 — Other Relationship Entry				67	0.18	153	1	15	1.08	0.00
$ind1	Note controller			67	0.18	153	1	15	1.08	0.00
$ind2	Display constant controller			67	0.18	153	1	15	1.08	0.00
$#	number/occurrence of field (in KBR version)			18	0.05	23	1	15	1.10	0.00
$*	Link with identifier (in KBR version)			67	0.18	153	1	15	1.08	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			67	0.18	153	1	15	1.08	0.00
$z	International Standard Book Number			1	0.00	1	1	12	1.18	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				10,197	26.93	12,537	1	51	1.08	0.00
$ind1	Access method			10,197	26.93	12,537	1	51	1.08	0.00
$ind2	Relationship			10,197	26.93	12,537	1	51	1.08	0.00
$#	number/occurrence of field (in KBR version)			3,438	9.08	3,787	1	45	1.07	0.00
$a	Host name			5	0.01	5	1	2	1.08	0.08
$u	Uniform Resource Identifier			10,187	26.90	12,531	1	51	1.08	0.00
$y	Link text			16	0.04	27	1	51	2.06	0.03
$z	Public note			275	0.73	275	1	10	1.01	0.00
$7	Access status			10,103	26.68	12,437	1	51	1.10	0.00
880 — Alternate Graphic Representation				1	0.00	1	1	4	1.10	0.00
$#	number/occurrence of field (in KBR version)			1	0.00	1	1	4	1.09	0.00
$a	Same as associated field			1	0.00	1	1	4	1.10	0.00
$6	Linkage			1	0.00	1	1	4	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				7,725	20.40	7,725	1	4	1.00	0.00
$ind1				26	0.07	26	1	2	1.00	0.00
$#				2,521	6.66	2,521	1	4	1.00	0.00
$a				7,725	20.40	7,921	1	8	1.04	0.00
Locally defined tags of the Royal Library of Belgium
997 — Item information				37,741	99.66	41,723	1	254	1.14	0.00
$#	number/occurrence of field			2,972	7.85	3,203	1	16	1.29	0.00
$*	Link with identifier			37,741	99.66	41,723	1	254	1.14	0.00
$a	Barcode number			37,741	99.66	41,723	1	254	1.14	0.00
$c	Library (holding institution)			37,741	99.66	41,723	1	254	1.14	0.00
$d	Section (department of holding institution)			37,741	99.66	41,724	1	254	1.14	0.00
$g	Call Number			37,370	98.68	41,320	1	254	1.14	0.00
$h	Rating2			1	0.00	1	1	2	1.02	0.00
$t	Document type			37,741	99.66	41,723	1	254	1.14	0.00
$v	inventory number			8,542	22.56	8,872	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	1.13	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