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003 - Control Number Identifier (NR)

MARC 21 Authority - Full
October 2003
Indicators and Subfield Codes

This field has no indicators or subfield codes.

FIELD DEFINITION AND SCOPE

MARC code for the agency whose system control number is contained in field 001 (Control Number).

See Appendix G: Organization Code Sources for a listing of sources used in MARC 21 records.

Whenever the number in field 001 is changed, agencies must assure that the MARC code in field 003 applies to the number found in the 001 field.

■ EXAMPLES

001 0010C0086##
003 CaOONL
001 n##86742756#
003 DLC

INPUT CONVENTIONS

System Generation - Usually system generated.
Library of Congress >> MARC >> Authority >> 00X >> 003
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