QA catalogue for analysing library data
number of records: 3,071,783
last data update: 2026-09-25 22:15
timestamp of analysis: 2026-09-25 21:42:32
(00:04:38)
History of cataloging
This chart shows the history of cataloguing.
The Y axis is based on the 'date entered on file' data element that indicates the date the MARC record was created (008/00-05), the X axis is based on 'Date 1' element (008/07-10)
This chart was implemented based on Benjamin Schmidt's blog post The history library catalogs inside MARC records
