060 National Library of Medicine Call Number

Field definition and scope:

Field 060 contains a National Library of Medicine (NLM) call number for a series when all or part of the series is classified as a collected set or with the main series (646 Series Classification Practice, subfield $a, code c or m). The second indicator values distinguish between content actually assigned by the National Library of Medicine and content assigned by an organization other than NLM. The organization is identified in subfield $5.

Field 060 may also contain the volumes/dates to which the number applies. Varying numbers for different ranges of volumes/dates within a series or different copies or sets are contained in separate 060 fields.

The source of the classification number is National Library of Medicine Classification that is maintained by the National Library of Medicine. NLM also determines which Library of Congress Classification schedules are used to augment the NLM scheme.

The National level record requirement for this field is Optional.

Field 060 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 060	National Library of Medicine Call Number	O	R
Indicator:
First	Undefined; contains a blank	M

Second	Source of call number	M
0	Assigned by NLM	A
4	Assigned by agency other than NLM	A

Subfield code:
$a	Classification number	M	NR
$b	Item number	A	NR
$d	Volumes/dates to which call number applies	current - O earlier - M	NR
$0	Authority record control number or standard number		R
$1	Real World Object URI		R
$5	Institution to which field applies	A	R
$6	Linkage	A	NR
$8	Field link and sequence number	O	R

Input conventions:

Order

Content designator history:

Subfield $0 - Authority record control number or standard number [new, 2017]

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

LC Guidelines:

060 National Library of Medicine Call Number