MARC 21 Format for Bibliographic Data: 015: National Bibliography Number (Network Development and MARC Standards Office, Library of Congress)

Bibliography entry number(s) for cataloging information that is derived from a national bibliography.

When cataloging information is derived from an entry in a foreign national bibliography, the number of the entry is given in the record. A work may have more than one number from a single national bibliography or may have numbers from more than one national bibliography.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

■ SUBFIELD CODES

$a - National bibliography number


015	##$aB67-25185
015	##$aF84-3117

Multiple numbers are each recorded in a separate subfield ‡a.


015	##$aB67-20987$aB67-20988 (pbk)
015	##$aGFR67-A14-54$aAu67-6

Volume numbers or other data that qualify a national bibliography number are recorded in subfield ‡a following the number and are enclosed in parentheses.


015	##$aF67-835 (v. 1)$aF67-9455 (v. 2)

$z - Canceled/invalid national bibliography number

Canceled or invalid (structurally or application) national bibliography number.


015	##$a06,A29,1122$z05,N51,1204$2dnb [code "dnb" is for Deutsche Nationalbibliographie]
015	##$a06,A29,0382$z05,A21,0597$z04,N48,0463$2dnb [code "dnb" is for Deutsche Nationalbibliographie]

$2 - Source

Code that identifies the source of the National Bibliography Number. Code from: MARC Code Lists for Relators, Sources, Description Conventions.


015	##$a84-3117$2bnf [code "bnf" is for Bibliographie nationale française]
015	##$a67-A14-54$2dnb [code "dnb" is for Deutsche Nationalbibliographie]

$6 - Linkage

See description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number

See description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Punctuation - Field 015 does not end with a mark of punctuation unless the field ends with an abbreviation, an initialism, or data that ends with a mark of punctuation.

Spacing - Spaces are omitted between the alpha and numeric portions of the number.

Capitalization - Alphabetic characters preceding the national bibliography number may be upper or lowercase.

Display Constants

( ... )

[parentheses]

Parentheses that customarily enclose the national bibliography number are not carried in the machine-readable record. They may be system generated as a display constant associated with the field tag.


	Content designated field:
015	##$aF84-1004 Display example: (F84-1004)

CONTENT DESIGNATOR HISTORY

In 2001, the field was changed from Not repeatable (NR) to Repeatable (R) to allow for multiple bibliography numbers. $z - Canceled/invalid national bibliography number [NEW, 2007] $2 - Source [NEW, 2001]

015 - National Bibliography Number (R)

FIELD DEFINITION AND SCOPE

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

■ SUBFIELD CODES

INPUT CONVENTIONS

CONTENT DESIGNATOR HISTORY


Subfield Codes
$a - National bibliography number (R) $z - Canceled/invalid national bibliography number (R) $2 - Source (NR)	$6 - Linkage (NR) $8 - Field link and sequence number (R)