180 Heading - General Subdivision (NR) (Variable Data Field)

Field definition and scope:

Field 180 contains a topical or language term used as a heading in a subdivision record .

The National level record requirement for this field is Mandatory if applicable.

Field 180 is NOT repeatable .

Guidelines for applying content designators:

The content designators identify the subelements occurring in general subdivision headings constructed according to generally accepted thesaurus-building conventions (e.g., Library of Congress Subject Headings, Medical Subject Headings).

A general subdivision may be a topical or language term that is used as a subdivision portion of an extended subject or index term access field in bibliographic records.

A topical or language term that is used as the lead element of an established heading record is contained in a 150 (Heading - Topical Term) field.

For indicator and subfield code definitions and examples, National level (NLR) record requirements , and designator repeatability , see table below:

See: Examples for this field.

Input conventions:

Punctuation

Spacing

Display constant

LC guidelines for usage:

180 Heading - General Subdivision

Related MARC field or document:

X80 General Subdivisions - General Information

See also:

1XX Headings

Variable Data Fields