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Concise Formats - 2008 Archive >> Classification >> 00X

Control Fields (001-008)

This is an ARCHIVED VERSION of the 2008 electronic edition of the MARC 21 Concise Formats.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.

Control fields contain record control number and coded information used in the processing of MARC 21 classification records. These fields have no indicators or subfield codes.

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.