Library of Congress >> MARC >> Bibliographic >> 5XX >> 580

580 - Linking Entry Complexity Note (R)

MARC 21 Bibliographic - Full
February 1999
First Indicator
Undefined
# - Undefined

Second Indicator
Undefined
# - Undefined

Subfield Codes
$a - Linking entry complexity note (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Description of the complex relationship between the item described in the record and other items that cannot be adequately generated from the linking entry fields 760-787.

In some cases the field is used to state a relationship when no corresponding linking entry fields are present, such as for the following:

When used, this field appears in addition to any relevant linking entry fields.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

■ SUBFIELD CODES

$a - Linking entry complexity note
Catalog entry for the related title and a statement describing the relationship.
580 ##$aContinued in 1982 by: U.S. exports. Schedule E commodity groupings by world area and country.
785 10$tU.S. exports. Schedule E commodity groupings by world area and country$w(DLC)###84641135
580 ##$aMerged with: Index chemicus (Philadelphia, Pa. : 1977), to form: Current abstracts of chemistry and index chemicus (Philadelphia, Pa : 1978).
785 17$tIndex chemicus (Philadelphia, Pa. : 1977)$x0160-1482$w(DLC)###83642297
785 17$tCurrent abstracts of chemistry and index chemicus (Philadelphia, Pa : 1978)$x0161-455X$w(DLC)###83642299
580 ##$aCumulates: Deutsche Bibliographie. Wöchentliches Verzeichnis.
787 1#$tDeutsche Bibliographie. Wöchentliches Verzeichnis
580 ##$aContinued by: Ionospheric predictions issued by the laboratory under its later name: Institute for Telecommunication Sciences and Aeronomy.
785 10$aInstitute for Telecommunication Sciences and Aeronomy.$tIonospheric predictions
580 ##$aForms part of the Frances Benjamin Johnston Collection.
773 1#$tFrances Benjamin Johnston Collection
$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

Punctuation - Field 580 ends with a period unless another mark of punctuation is present.

CONTENT DESIGNATOR HISTORY

This field originally was defined only in the serials specifications. In 1981, it was validated for the books specifications to accommodate technical report materials cataloging. When the record-linking technique was developed in 1982, field 580 was validated in all other MARC specifications.

$z - Source of note information [OBSOLETE, 1990]
Source information is included as part of the linking entry complexity note in subfield $a.
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