MARC 21 Format for Bibliographic Data: Tag 650

Library of Congress >> MARC >> Bibliographic >> 6XX  >> 650

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650 - Subject Added Entry-Topical Term (R)

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MARC 21 Bibliographic - Full

October 2014

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First Indicator	Second Indicator
Level of subject # - No information provided 0 - No level specified 1 - Primary 2 - Secondary	Thesaurus 0 - Library of Congress Subject Headings 1 - LC subject headings for children's literature 2 - Medical Subject Headings 3 - National Agricultural Library subject authority file 4 - Source not specified 5 - Canadian Subject Headings 6 - Répertoire de vedettes-matière 7 - Source specified in subfield $2

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GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

First Indicator - Level of subject

Used to distinguish primary and secondary descriptors.

# - No information provided

0 - No level specified

Level of the subject term could be determined but is not specified.

650	00$aFlour industry$vPeriodicals.

1 - Primary

Main focus or subject content of the material.

650	17$aCareer Exploration.$2ericd
650	#7$aCareer Exploration.$2ericd
650	17$aCooks.$2ericd

2 - Secondary

Less important aspect of the content of the material.

650	27$aFood Service.$2ericd
650	27$aJunior High Schools.$2ericd
650	27$aSimulation.$2ericd [Primary and secondary subject content identified.]