Library of Congress >> MARC >> Bibliographic >> 01X-09X >> 030

030 - CODEN Designation (R)


MARC 21 Bibliographic - Full
February 1999

First Indicator
Undefined
# - Undefined

Second Indicator
Undefined
# - Undefined


Subfield Codes
$a - CODEN (NR)
$z - Canceled/invalid CODEN (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

CODEN designation for a bibliographic title. The CODEN is assigned by the International CODEN Section of Chemical Abstracts Service.

CODEN is a unique identifier for scientific and technical periodical titles; it consists of six characters.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

SUBFIELD CODES

$a - CODEN
Valid CODEN for the title.
030 ##$aJACSAT
$z - Canceled/invalid CODEN
If the valid CODEN is not known, subfield $z may be used alone in the record.
030 ##$aASIRAF$zASITAF
$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

Structure - First four characters are mnemonic uppercase characters for serial titles to which a fifth character (e.g., A, B, C, D) is added. The sixth character is a computer-calculated check character which may be either alphabetic or numeric. All alphabetic characters are in uppercase. Hyphens and spaces appearing in the CODEN abbreviation are not carried in the MARC record.

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