022 - International Standard Serial Number (R)
MARC 21 Bibliographic - Full
October 2007
First Indicator
Level of international interest
# - No level specified
0 - Continuing resource of international interest
1 - Continuing resource not of international interest
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Second Indicator
Undefined
# - Undefined
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Subfield Codes
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$a - International Standard Serial Number (NR)
$l - ISSN-L (NR)
$m - Canceled ISSN-L (R)
$y - Incorrect ISSN (R)
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$z - Canceled ISSN (R)
$2 - Source (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
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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.
$l - ISSN-L ISSN that links together various media versions of a continuing resource. ISSN-L may be generated for
display.
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| 022 |
0#$a1234-1231$l1234-1231
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$m - Canceled ISSN-L Canceled ISSN-L that has been associated with the resource. Each canceled ISSN-L
is contained in a separate subfield $m. ISSN-L (canceled) may be generated for display.
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| 022 |
0#$a1560-1560$l1234-1231$m1560-1560
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$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 $z.
ISSN (incorrect) may be generated for display.
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| 022 |
0#$a0046-225X$y0046-2254
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$z - Canceled ISSN Canceled ISSN that is associated with the continuing resource. Each canceled ISSN
is contained in a separate subfield $z.
ISSN (canceled) may be generated for display.
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| 022 |
0#$a0145-0808$z0361-7106
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$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.
$8 - Field link and sequence number
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
$z, respectively.
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Content designated field:
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| 022 |
0#$a0018-5817$y0018-5811
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Display example:
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ISSN 0018-5817 ISSN (incorrect)
0018-5811
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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.
$2 - Source [NEW, 2003]