650 Second indicator: Value 0 - Library of Congress Subject Headings

Value 0 indicates that the subject added entry conforms to the Library of Congress Subject Headings (LCSH) that is maintained by the Library of Congress. Use of value 0 requires that the heading be appropriate for use in LCSH.

Conforms to LCSH is defined as:

topical headings (or topical headings and subdivisions) found in the LC subject authority file or in the latest edition of LCSH, including the latest microfiche, printed version, CD-ROM, and supplements;

topical headings found in the LC subject authority file or in the latest edition of LCSH to which is added a free-floating or regular subdivision according to the rules stated in the Subject Cataloging Manual: Subject Headings, particularly subdivisions listed in the pattern lists, and geographic subdivisions formulated and applied according to the rules in the manual;

topical headings not printed in LCSH in the past but which have been used by LC and which are not likely to have changed (e.g., names of chemical compounds);

topical headings constructed with free-floating phrases, e.g., . . . in art, etc. according to the rules in LCSH;

certain music headings with qualifiers specifying instruments or vocal parts when the main heading has a general scope note printed in LCSH, with or without a general see also reference.

Value 0 is an authoritative-agency data element .

To return, select:

650 Subject Added Entry - Topical Term