336 Content Type

Field definition and scope:

Field 336 contains the form of communication through which a work is expressed. It is used in conjunction with Leader /06 (Type of record), which indicates the general type of content of the resource. Field 336 information enables expression of more specific content types and content types from various lists.

Multiple content types from the same source vocabulary or code list may be recorded in the same field in separate occurrences of subfield $a (Content type term) and subfield $b (Content type code). Terms from different source vocabularies are recorded in separate occurrences of the field.

The National level record requirement for this field is Optional.

Field 336 is repeatable.

Guidelines for applying content designators:

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

Position	Description	NLR	MLR	Repeatability
Field 336	Content Type	O	O	R
Indicator:
First	Undefined; contains a blank	M
Second	Undefined; contains a blank	M

Subfield code:
$a	Content type term	M	O	R
$b	Content type code	M	O	R
$0	Authority record control number or standard number			R
$1	Real World Object URI			R
$2	Source	M	O	NR
$3	Materials specified	O	O	NR
$6	Linkage	A	O	NR
$8	Field link and sequence number	O	O	R

Content designator history:

Field 336 - Content Type [new, 2009]

Subfield $0 - Authority record control number or standard number [new, 2015]

Subfield $1 - Real World Object URI [new, 2017]