Library of Congress >> MARC >> Classification >> 01X-084 >> 016

016 - National Bibliographic Agency Control Number (R)


MARC 21 Classification - Full
October 2004

First Indicator
National bibliographic agency
# - Library and Archives Canada
7 - Source specified in subfield $2

Second Indicator
Undefined
# - Undefined


Subfield Codes
$a - Record control number (NR)
$z - Canceled or invalid control number (R)
$2 - Source (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Unique numbers that have been assigned to a record by a national bibliographic agency other than the Library of Congress.

Library of Congress control numbers are recorded in field 010. The control number may also appear in field 001 (Control Number) in records distributed by the same national agency. An organization using the record may remove the national bibliographic agency control number from field 001 and use field 001 for its own system control number. This number is a record control number used in a national bibliographic agency system, rather than a number used for an entry in a national bibliography.

A record may contain field 016 with a canceled or invalid control number of a previously-distributed record. A record may be canceled because it is a duplicate record for the same classification number.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - National bibliographic agency
Either identifies a specific national bibliographic agency as the source of the control number, or refers to a code subfield $2 (Source).
# - Library and Archives Canada
Library and Archives Canada (LAC) is the source of the national bibliographic agency control number.
7 - Source specified in subfield $2
Used when the source of the control number is indicated by a code in subfield $2.
016 7#$a94.763966.7$2[National bibliographic agency identifier]
Second Indicator - Undefined
Undefined and contains a blank (#).

SUBFIELD CODES

$a - Record control number
Valid record control number assigned by a national bibliographic agency.
016 7#$agn0349684n$2[National bibliographic agency identifier]
$z - Canceled or invalid control number
Canceled or invalid control number assigned by a national bibliographic agency.
$2 - Source
MARC code or the name of the organization that identifies the national bibliographic agency that was the source of the record control number. Code from: MARC Code List for Organizations.
Used only when the second indicator position contains value 7 (Source specified in subfield $2).
016 7#$aMC967544$z0006342114$2[National bibliographic agency identifier]
$8 - Field link and sequence number
See the description of this subfield in Appendix A: Control Subfields.

CONTENT DESIGNATOR HISTORY

Field 016 - National Library of Canada Record Control Number [REDEFINED, 1997] [CAN/MARC only]
Both indicator positions were undefined. The defined subfield codes were $a (NLC record control number) and $z (Canceled/invalid NLC control number).

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