003 - Control Number Identifier (NR)
MARC 21 Community Information - Full
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 present in field 001 (Control
See Appendix G Organization Code
Sources for a listing of organization code 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.
System Generation - Usually system generated.