COMARC/B Format for Bibliographic Data

PDFCOMARC/BMarch2022

321 External indexes/abstracts/references note

This field contains a note indicating the availability in other documents of indexes and abstracts of the item described in the record. For rare materials it may contain a brief reference to a bibliography, catalogue, etc. where the item has been cited or described.

Subfields & repeatability

FIELD/SUBFIELDREPEATABILITY
321External indexes/abstracts/references noter
aText of notenr
uUniform Resource Identifier (URI)nr
xISSNnr

Indicators

INDICATORVALUEMEANING
1Type of coverage
0Indexing, abstracting coverage
1Bibliography, catalogue citation
No information given
2Not defined

Indicator 1 specifies the extent of the description that will be found in the cited document.

Value "0" indicates that the information in the field specifies coverage of the item in an indexing or abstracting service (see example 2). A print/display constant equivalent to "Indexed in:" would be appropriate.

Value "1" indicates that the information in the field specifies an external source that cites the item (see example 3). A print/display constant equivalent to "Reference:" would be appropriate.

Value empty indicates that the information in the field is free text (see example 1).

SUBFIELDS

321a Text of note

The name of external source where the item is indexed or cited.

321u Uniform Resource Identifier (URI)

The Uniform Resource Identifier (URI), for example a URL or URN, provides electronic access data in a standard syntax. This data can be used for automated access to an electronic resource through one of the Internet protocols. Subfield u may be used when the source is available in an electronic version (see example 2).

321x ISSN

ISSN of the external source document.

NOTES ON FIELD CONTENTS

The preliminary term is not generated on output; that is why it must be entered strictly when it is necessary. Repeatable when more than one external source is to be entered.

RELATED FIELDS

320INTERNAL BIBLIOGRAPHIES/INDEXES/SUMMARIES NOTE
This field contains notes on internal bibliographies, indexes and/or summaries.

EXAMPLES

  1. 321⊔⊔aFor a list of contents see Heyer. Historical sets, collected editions and monuments of music
    (A set of musical scores described in an external publication.)
  2. 3210⊔aApplied science and technology index x0003-6986
    3210⊔aBiography index x0006-3053
    3210⊔aChemical abstracts x0009-2258 uhttp://www.cas.org/
    3210⊔aIndex medicus x0019-3879
    3210⊔aInternational packaging abstracts x0260-7409
    3210⊔aReaders' guide to periodical literature x0034-0464
    (A continuing resource that has been indexed by a number of indexing and abstracting services.)
  3. 3211⊔aReuss, E. Bib. Novi. Testamenti Graeci, p. 35
    3211⊔aRudolphi, E.C. Froschauer, 336
    3211⊔aDarlow & Moule, II, p. 586
    (A rare book cited in several standard bibliographies.)
  4. *

    2001⊔a≠The ≠classical journal
    3210⊔aEducation index x0013-1385
    3210⊔aAnnual bibliography of English language and literature x0066-3786
    3210⊔aBook review index x0524-0581
    3210⊔aIndex to book reviews in the humanities x0073-5892
    3210⊔aMLA international bibliography of books and articles on the modern languages and literatures (Complete edition) x0024-8215
  5. *

    3211⊔aBibliografski citat: Škafar, Bibliografija prekmurskih tiskov od 1715 do 1919, Ljubljana 1978, št. 2
  6. * COBISS.net

    3210⊔aIndeksira: Arts & Humanities Citation Index x0162-8445