Appendix G - Format Changes

MARC 21 Bibliographic

October 2010

This section is provided for the lists of format changes that accompany each update to the MARC 21 Format for Bibliographic Data.

MARC 21 FORMAT FOR BIBLIOGRAPHIC DATA

FORMAT CHANGE LIST

Update No. 12, October 2010

This page documents the changes contained in twelfth update to the 1999 edition of the MARC 21 Format for Bibliographic Data. Update No. 12 (October 2010) includes changes resulting from proposals that were considered by the MARC 21 community during June 2010.

■ New content designators:

Codes

Code c - ISBD punctuation omitted in Leader/18 (Descriptive cataloging form)

Subfield codes

$u Uniform Resource Identifier (R) in 561 (Ownership and Custodial History)

■ Changes in content designator names and definitions:

Codes

Code i - ISBD changed to ISBD punctuation included and redescribed in
Leader/18 (Descriptive cataloging form)

Subfields

$0Authority record control number changed to Authority record control number or
standard number and redefined in Appendix A

UPDATE 12 LOCAL PRINT GUIDE

The following sections and fields were changed in Update No. 12 and should be printed to keep a print copy of the format up-to-date:

Leader: http://www.loc.gov/marc/bibliographic/bdleader.html
Field 024 - Other Standard Identifier: http://www.loc.gov/marc/bibliographic/bd024.html
Field 561 - Ownership and Custodial History: http://www.loc.gov/marc/bibliographic/bd561.html
Field 787 - Other Relationship Entry: http://www.loc.gov/marc/bibliographic/bd787.html
Appendix A - Control Subfields: http://www.loc.gov/marc/bibliographic/ecbdcntf.html