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Concise Formats - 2008 Archive >> Bibliographic >> 001-006

Control Fields (001-006)

This is an ARCHIVED VERSION of the 2008 electronic edition of the MARC 21 Concise Formats. Please see loc.gov/marc/concise/ for the most up-to-date version of the electronic MARC 21 Concise Formats.

Fields 001-006 contain control numbers and other control and coded information that are used in processing MARC bibliographic records. Each control field is identified by a field tag in the Directory and contains either a single data element or a series of fixed-length data elements identified by relative character position. Variable control fields contain neither indicator positions nor subfield codes.