MARC 6XX Subject Access Fields - General Information

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MARC fields 6XX in the bibliographic format contains subject access entries and terms. This article gives general information about subject access fields. These fields are repeatable.

Commonly-used tags

1st indicator – Differs depending on entry type

2nd indicator – 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

Subfield delimiters Varies depending on field, some constants across the 6XX fields are:

ǂv - Form subdivision (R) ǂx - General subdivision (R) ǂy - Chronological subdivision (R) ǂz - Geographic subdivision (R) ǂ2 - Source of subject heading or term (NR)

Policy and formulation

  • For satires or other humorous material, use the ǂv Humor in addition to the 655 Satires.


600 1 0 Laud, William, ǂd 1573-ǂx Public opinion ǂv Humor ǂv Early works to 1800.
655 _ 7 Satires (document genre) ǂ2 aat

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