580 Subfield $a - Linking entry complexity note:

Subfield $a contains the catalog entry for the related title and a statement describing the relationship.

Examples:

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

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580 Linking Entry Complexity Note