Field definition and scope:

Field 010 contains the control number, assigned by the Library of Congress, of the related bibliographic record for which a separate holdings record is made.  The control number for bibliographic records distributed by the Library of Congress is an LCCN.

In separate holdings records distributed by the Library of Congress, the control number for the related LC bibliographic record is carried in field 004 (Control Number for Related Bibliographic Record).  An organization receiving an LC holdings record may transfer the control number for the related bibliographic record from field 004 to field 010 and place its own related bibliographic record control number in field 004.

See also field 014 (Linkage Number), field 016 (National Bibliographic Agency Control Number), and field 035 (System Control Number) for control numbers for related bibliographic records assigned by other sources.  See field 010 (Library of Congress Control Number) in the MARC 21 Format for Bibliographic Data for a detailed description of the structure of the LCCN for bibliographic records.

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

Field 010 is NOT repeatable.

Guidelines for applying content designators:

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

Position

Description

Repeatability

Field 010

Library of Congress Control Number

NR

Indicator:

 

 

First

Undefined; contains a blank

 

Second

Undefined; contains a blank

 

 

 

 

Subfield code:

 

 

$a

LC control number

NR

$b

NUCMC control number

R

$z

Canceled or invalid LC control number

R

$8

Field link and sequence number

R

Input conventions:

Agency-assigned field

Punctuation

Capitalization

Embedded holdings information

Related MARC fields or documents:

004  Control Number for Related Bibliographic Record

014  Linkage Number

016  National Bibliographic Agency Control Number

035  System Control Number

MARC 21 Format for Bibliographic Data:

010  Library of Congress Control Number

See also:

0XX  Number and Codes

Variable Data Fields