Appendix G - Format Changes
MARC 21 Bibliographic
April 2018
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. 26, April 2018
This page documents the changes contained in the twenty-sixth
update to the 1999 edition of the MARC 21 Format for
Bibliographic Data. Update No. 26 (April 2018)
includes changes resulting from proposals that were
considered by the MARC 21 community since the publication of Update No. 25 (December 2017).
UPDATE 26 CHANGES
■ New content designators:
Codes
Code x - Not Applicable
in Map 007/04 (Physical Medium)
Subfields
$3Materials specified (NR) in 377 (Associated Language)
$3Materials specified (NR) in 380 (Form of Work)
$3Materials specified (NR) in 381 (Other Distinguishing Characteristics of Work
or Expression)
$3Materials specified (NR) in 383 (Numeric Designation of Musical Work)
■ Changes in content designator
names and definitions:
Codes
Code c - Pre-production
renamed Photographic pre-production
and redescribed in Map 007/06 (Production/reproduction details)
■ Fast-track changes:
New Subfield
$4 Relationship (R) in 730 (Added Entry-Uniform Title)
Subfield
$r Total number of individuals performing alongside ensembles (NR)
redescribed in 382 (Medium of Performance)