670 Source Data Found

Field definition and scope:

Field 670 contains a citation for a consulted source in which information is found related in some manner to the entity represented by the authority record or related entities. The field may also include the information found in the source.

Each source citation is contained in a separate 670 field.

A citation for a consulted source that yielded no information is contained in field 675 (Source Data Not Found).

The citations and information in this field are often not written in a form adequate for public user display.

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

Field 670 is repeatable.

Guidelines for applying content designators:

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

Position	Description	NLR	Repeatability
Field 670	Source Data Found	A	R
Indicator:
First	Undefined; contains a blank	M
Second	Undefined; contains a blank	M

Subfield code:
$a	Source citation	M	NR
$b	Information found	A	NR
$u	Uniform Resource Identifier	O	R
$w	Bibliographic record control number		R
$6	Linkage	A	NR
$8	Field link and sequence number	O	R

Input conventions:

Punctuation and Spacing

Order

Content designator history:

Subfield $a - Source consulted and information found [redefined, 1997] [CAN/MARC only]

Subfield $u - Uniform Resource Identifier [defined, 2002]: In 2002, subfield $u was defined to contain the Uniform Resource Identifier (URI).

Subfield $w - Bibliographic record control number [new, 2015]

LC Guidelines:

670 Source Data Found

DCM Z1 Instructions:

670 Source Data Found