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Discusses the basic issues relating to bibliographic control of maps and related materials. Discusses rules and standards covering such cataloging, as well as application of the rules and principles both in general and in response to specific problems, and various practicing options.
This group is part of Core's Metadata & Collections Section.
On September 29, 2022, OCLC installed changes to WorldCat Validation, with a small additional update on October 11. See the WorldCat Validation Release Notes, September 2022 for full details.
As a result of this installation, OCLC Encoding Level K is now invalid in WorldCat. All of the nearly 26 million WorldCat bibliographic records previously identified as Encoding Level K have now been converted to one of the standard MARC values blank, 7, or 3, as appropriate according to algorithmic determinations of record fullness. When entering original cataloging records into WorldCat, all OCLC participants are encouraged to use the appropriate MARC 21 Encoding Levels: value blank for full level, value 7 for minimal level, or value 3 for abbreviated level.
In addition to the invalidation of Encoding Level K, this validation installation also includes the following new features and enhancements:
The following bug fixes have also been included:
These enhancements and fixes are the result of announcements of new MARC elements and codes by the Library of Congress as well as feedback and requests from members of the OCLC cooperative.
See the WorldCat Validation Release Notes, September 2022 at oc.lc/validation-release-notes for more details of the changes installed on September 29, and October 11, 2022.
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