The following documents the changes contained in the thirty-third update to the 1999 edition of MARC 21 Format for Authority Data.  Update No. 33 (November 2021) includes changes resulting from proposals that were considered by the MARC 21 community since the publication of Update No. 32 (June 2021).

New content designators:

Subfield codes

$i  Relationship information (R) in 672 (Title Related to the Entity)

$4  Relationship (R) in 672 (Title Related to the Entity)

Changes in content designator names and definitions:

Subfield code

$g  Coordinates - southernmost latitude redescribed in 034 (Coded Cartographic Mathematical Data)

See also:

Appendix F:  Format Change Lists