020 - International Standard Book Number (R)
MARC 21 Holdings - Full
January 2000
First Indicator
Undefined
# - Undefined
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Second Indicator
Undefined
# - Undefined
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Subfield Codes
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$a - International Standard Book Number (NR)
$c - Terms of availability (NR)
$z - Canceled/invalid ISBN (R)
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$6 - Linkage (NR)
$8 - Field link and sequence number (R)
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FIELD DEFINITION AND SCOPE
International Standard Book Number (ISBN) copied from subfield $a of field
020 (International Standard Book Number) of the MARC bibliographic record that
represents the description of the item for which a separate holdings record is
created.
It may also contain terms of availability and any canceled or invalid ISBN from
subfields $c and $z of field 020 in the bibliographic record. If
the bibliographic record contains multiple valid ISBNs that refer to different versions
of the item, the one that corresponds to the item described in the holdings statement is
used.
Additional examples of the use of field 020 (International Standard Book Number) are in
the MARC 21 Format for Bibliographic Data.
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
■ INDICATORS
- Both indicator positions are undefined; each contains a blank (#).
■ SUBFIELD CODES
$a - International Standard Book Number Valid ISBN for the item and any parenthetical qualifying information.
ISBN and the embedded hyphens may be generated for display.
Parenthetical qualifying information, such as the publisher/distributor,
binding/format, and volume numbers, is not separately subfield coded.
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| 020 |
##$a0456789012 (reel 1)
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$c - Terms of availability Price or a brief statement of availability and any parenthetical qualifying
information concerning the item.
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| 020 |
##$z0877790105 (Fabrikoid) :$c$12.00
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$z - Canceled/invalid ISBN Canceled or invalid ISBN and any parenthetical qualifying information. ISBN
(invalid) and the embedded hyphens may be generated for display.
Each canceled/invalid ISBN is contained in a separate subfield $z. If
no valid ISBN exists, subfield $z may be used alone in the record.
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| 020 |
##$a0877790019 (black leather)$z0877780116 :$c$14.00
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$8 - Field link and sequence number
INPUT CONVENTIONS
ISBN Structure - ISBN is an agency-assigned data element. ISBNs are assigned to monographic publications
by designated agencies in each country participating in the program. An ISBN consists of
ten digits comprising four groups separated by hyphens. (The tenth 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). Procedures for validation of the ISBN by
calculating the check digit and hyphenating instructions are in Information and
Documentation - International Standard Book Numbering (ISBN) (ISO 2108). A
description of the ISBN structure and guidelines for recording qualifying information
are found in Library of Congress Rule Interpretations available from the
Cataloging Distribution Service, Library of Congress.
Punctuation - Field 020 does not end with a period.
Display Constants
| ISBN |
[associated with the content of subfield $a] |
| ISBN (invalid) |
[associated with the content of subfield $z] |
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[embedded hyphens] |
An ISBN usually appears on an item with the prefix
ISBN and with each of its
parts separated from the other by hyphens or spaces. The initialism
ISBN, the
phrase
ISBN (invalid), and the embedded hyphens are not carried in the MARC
record. They may be system generated as display constants associated with the content of
subfields $a and $z, respectively.
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Content designated field:
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| 020 |
##$a0870686933 (v. 1)$z087064302
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Display example:
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ISBN 0-87068-693-3 (v. 1) ISBN (invalid)
0-87068-430-2
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Embedded Holdings Information - When holdings information is embedded in a MARC bibliographic record, no additional
field 020 is used.