The following documents the changes contained in the sixth update to the 1999 edition of MARC 21 Format for Authority Data.  Update No. 6 (October 2005) includes changes resulting from proposals that were considered by the MARC 21 community during 2005.

Addition of MARC alphabetic prefix for field 010 (Library of Congress Control Number)

See also:

Appendix F:  Format Change Lists

Appendices