Library of Congress >> MARC >> Bibliographic >> 01X-09X  >> 022

022 - International Standard Serial Number (R)


MARC 21 Bibliographic - full
June 2021

First Indicator Second Indicator
Level of international interest
# - No level specified
0 - Continuing resource of international interest
1 - Continuing resource not of international interest

Undefined
# - Undefined


Subfield Codes
  • $a - International Standard Serial Number (NR)
  • $l - ISSN-L (NR)
  • $m - Canceled ISSN-L (R)
  • $y - Incorrect ISSN (R)
  • $z - Canceled ISSN (R)
  • $0 - Authority record control number or standard number (NR)
  • $1 - Real World Object URI (R)
  • $2 - Source (NR)
  • $6 - Linkage (NR)
  • $8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

International Standard Serial Number (ISSN), a unique identification number assigned to a continuing resource, and/or any incorrect or canceled ISSN.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Level of international interest

Value that specifies whether the continuing resource is of international interest or of local or ephemeral interest only.

# - No level specified

Level of international interest is unknown or not specified. Used by all institutions other than the ISSN Centers when recording the ISSN from an issue or from a bibliography.

0 - Continuing resource of international interest

Of international interest, thus a full record has been registered with the ISSN Network. Used for all continuing resources for which individual ISSN Centers receive ISSN requests from abstracting and indexing services or other ISSN Network centers. Also used for all other continuing resources that are not within the scope defined for value 1. This value may be input only by the ISSN Centers.

1 - Continuing resource not of international interest

Not of international interest, thus an abbreviated record has been registered with the ISSN Network. Used for continuing resources judged to be of local or ephemeral interest. ISSN Centers have defined publications of local or ephemeral interest as those in which interest is likely to be limited to a certain geographic area, e.g., local newspapers, or certain span of time, e.g., calendars of events. In case of doubt, value 0 is used. This value may only be input by the ISSN Centers.

Second Indicator - Undefined

Undefined and contains a blank (#).

SUBFIELD CODES

$a - International Standard Serial Number

Valid ISSN for the continuing resource. ISSN may be generated for display.

022 ##$a0376-4583

$l - ISSN-L

ISSN that links together various media versions of a continuing resource. ISSN-L may be generated for display.

022 0#$a1234-1231$l1234-1231

$m - Canceled ISSN-L

Canceled ISSN-L that has been associated with the resource. Each canceled ISSN-L is contained in a separate subfield $m. ISSN-L (canceled) may be generated for display.

022 0#$a1560-1560$l1234-1231$m1560-1560

$y - Incorrect ISSN

Incorrect ISSN that has been associated with the continuing resource. Each incorrect ISSN is contained in a separate subfield $y. A canceled ISSN is contained in subfield $z.

ISSN (incorrect) may be generated for display.

022 0#$a0046-225X$y0046-2254

$z - Canceled ISSN

Canceled ISSN that is associated with the continuing resource. Each canceled ISSN is contained in a separate subfield $z.

ISSN (canceled) may be generated for display.

022 0#$a0145-0808$z0361-7106
022 0#$z0027-3473

$0 - Authority record control number or standard number

A URI for the ISSN in subfield $a.

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

022 0#$a1534-9322$0http://issn.org/resource/ISSN/1534-9322#ISSN

$1 - Real World Object URI

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

$2 - Source

ISSN Center responsible for assigning and maintaining ISSNs and related data.

Code from: ISSN National Centres code list online at: www.issn.org, National Centres.

$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

ISSN Structure - ISSN is an agency-assigned data element. ISSNs are assigned to continuing resource publications by national centers under the auspices of the ISSN Network. An ISSN consists of eight digits comprising two groups of four digits each, separated by a hyphen. The eighth digit is a check digit used as a computer validity check; it consists of a number between 0 and 9 or an uppercase X (for the arabic numeral 10). A description of the ISSN structure and the procedure for validation of the ISSN by calculating the check digit is in International Standard Serial Numbering (ISSN) (ISO 3297).

Punctuation - Field 022 does not end with a period.

Display Constants

ISSN [associated with the content of subfield $a]
ISSN-L [associated with the content of subfield $l]
ISSN-L (canceled) [associated with the content of subfield $m]
ISSN (incorrect) [associated with the content of subfield $y]
ISSN (canceled) [associated with the content of subfield $z]

ISSN usually appears on an item with the prefix ISSN and as two groups of four digits separated by a hyphen. The hyphen separating the two groups of digits is carried in the MARC record. The initialisms ISSN and ISSN-L and the phrases ISSN-L (canceled), ISSN (incorrect) and ISSN (canceled) are not input. They may be system generated as display constants associated with the content of subfields $a, $l, $m, $y, and $z, respectively.

 
Content designated field:
022 0#$a0018-5817$y0018-5811
Display example:
ISSN 0018-5817 ISSN (incorrect) 0018-5811

CONTENT DESIGNATOR HISTORY

$b - Form of issue [OBSOLETE] [CAN/MARC only]
$c - Price [OBSOLETE] [CAN/MARC only]
$l - ISSN-L [NEW, 2007]
$m - Canceled ISSN-L [NEW, 2007]
$y - Incorrect ISSN [NEW, 1978]
$z - Canceled ISSN [REDEFINED, 1978]

Subfield $z was redefined to include only ISSN assignment cancellations when subfield $y was defined. Prior to that time, subfield $z contained both incorrect and canceled ISSNs.

$0 - Authority record control number or standard number [NEW, 2021]
$1 - Real World Object URI [NEW, 2021]
$2 - Source [NEW, 2003]

Library of Congress >> MARC >> Bibliographic >> 01X-09X  >> 022
(06/03/2021)
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