Appendix F - Format Changes
MARC 21 Holdings
October 2010
This section is provided for the lists of format changes
that accompany each update to the MARC 21 Format for
Holdings Data.
MARC 21 FORMAT FOR HOLDINGS 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 Holdings
Data. Update No. 12 (October 2010) includes changes
resulting from proposals that were considered by the MARC
21 community during June 2010.
UPDATE 12 CHANGES
■ New content designators:
Subfield codes
$u Uniform Resource
Identifier (R) in 561 (Ownership and
Custodial History)