| First Indicator Level of international interest # - No level specified 0 - Continuing resource of international interest 1 - Continuing resource not of international interest | Second Indicator 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) $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 | ||||||||
$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 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.
| 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 $z] |
Content designated field:
| |||||||||
| 022 | 0#$a0018-5817$y0018-5811 | ||||||||
Display example:
| |||||||||
ISSN 0018-5817 ISSN (incorrect) 0018-5811
| |||||||||
NOTE
- This article is a Stub. It will be expanded to achieve the level of a proper encyclopedia article.
REFERENCES
- Library of Congress. https://www.loc.gov/marc/bibliographic/bd022.html (accessed October 12, 2017)
SEE ALSO
AUTHOR
- Salman Haider - Librarian Cataloger Blogger
HISTORY
- Written: 2017-10-14
PERMALINK
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