MARC Report 254 adds support for the changes introduced by–
MARC21 Update No. 29--Bibliographic
–announced by the Library of Congress on November 28, 2019.
Note: there were no changes to either the Authorities or the MFHD format in this update.
In addition, MARC Report 254 updates its codelists to include changes added by the following notices:
TECHNICAL NOTICE (August 9, 2019)
TECHNICAL NOTICE (September 13, 2019)
TECHNICAL NOTICE (October 4, 2019)
TECHNICAL NOTICE (October 11, 2019)
TECHNICAL NOTICE (November 1, 2019)
TECHNICAL NOTICE (November 26, 2019)
TECHNICAL NOTICE (December 12, 2019)
TECHNICAL NOTICE (January 17, 2020)