051 Library of Congress Copy, Issue, Offprint Statement

Field definition and scope:

Field 051 contains information added to a bibliographic record by the Library of Congress that relates to additional copies, issues, and/or offprints, etc. of the described material that are in its collections. Field 051 is used only for such information assigned by the Library of Congress. The field does not include supplements, indexes, etc., which are related to, but not the same as, the item in the main record. This field is frequently used for Library of Congress publications when the first two copies are given a call number based on the subject of the publication and additional copies are given a call number assigned to publications of LC.

The National level record requirement for this field is Mandatory if applicable.

Field 051 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, National-level (NLR) and Minimal-level (MLR) record requirements, and designator repeatability, see table below:

Position	Description	NLR	MLR	Repeatability
Field 051	Library of Congress Copy, Issue, Offprint Statement	A	O	R
Indicator:
First	Undefined; contains a blank	M
Second	Undefined; contains a blank	M

Subfield code:
$a	Classification number	M	O	NR
$b	Item number	A	O	NR
$c	Copy information	O	O	NR
$8	Field link and sequence number	O	O	R

Input conventions:

Punctuation

Content designator history:

Second Indicator - Series call number (SE) [obsolete]: In the serials specifications, the use of the second indicator position to indicate the type of series was made obsolete in 1976. The values were: 0 (No series involved), 1 (Main series), 2 (Subseries), and 3 (Sub-subseries).