010 Library of Congress Control Number (NR) (Variable Data Field)

Field definition and scope:

Field 010 contains a unique number assigned to a record by the Library of Congress (LC). The LC control number is carried in field 001 (Control Number) in records distributed by LC's Cataloging Distribution Service. It may also be carried in field 010$a.

An LC record may contain field 010 with a cancelled or invalid control number of a previously-distributed record. A record may be cancelled because it is a duplicate and represents the same classification data represented by another record. The structure of the cancelled or invalid control number is the same as that used by LC in field 001. Field 010 may or may not contain a subfield $a with the valid control number from the 001 field.

Field 010 is NOT repeatable .

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability , see table below:

See: Example for this field.

Structure:

For information, select: Structure of the LC Control Number .

Input conventions:

Field 010 is an agency-assigned field; it may be used only for an LC control number.

Related USMARC field or document:

001 Control Number

See also:

0XX Control Information, Numbers and Codes

Variable Data Fields