185 Heading - Form Subdivision

Field definition and scope:

Field 185 contains a form or genre term used as a heading in a subdivision record.

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

Field 185 is NOT repeatable.

Guidelines for applying content designators:

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

A form subdivision is used as a subdivision portion of an extended subject or index term access field in bibliographic records.

A form term that is used as the lead element of an established heading record is contained in a 155 (Heading - Genre/Form Term) field.

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

Position	Description	NLR	Repeatability
Field 185	Heading - Form Subdivision	A	NR
Indicator:
First	Undefined; contains a blank	M
Second	Undefined; contains a blank	M

Subfield code:
$v	Form subdivision	M	R
$x	General subdivision	A	R
$y	Chronological subdivision	A	R
$z	Geographic subdivision	A	R
$6	Linkage	A	NR
$8	Field link and sequence number	O	R

See: Examples for this field.

Input conventions:

Punctuation

Spacing

Display constant

Use of subfields $v, $x, $y, and $z in LCSH

LC Guidelines:

185 Heading - Form Subdivision