This section is provided for the lists of format changes that accompany each update to the MARC 21 Format for Authority Data. It can also be found in Appendix F of the MARC 21 Format for Authority Data.
This page documents the changes contained in the fourth update to the 1999 edition of the MARC 21 Format for Authority Data. Update No. 4 (October 2003) includes changes resulting from proposals which were considered by the ALA ALCTS/LITA/RUSA Machine-Readable Bibliographic Information Committee (MARBI) at its meetings in 2003, the Canadian Committee on MARC (CCM) at its 2003 meetings and by the Book Industry Communications/Bibliographic Standards Technical Subgroup (BIC/BSTS) at its meetings in 2003.
LC Implementation Plans
Subscribers can anticipate receiving MARC records reflecting these changes in all distribution services no earlier than April 23, 2004.