030 CODEN Designation

Field definition and scope:

Field 030 contains the CODEN designation, a unique identifier for scientific and technical periodical titles, copied from subfield $a of field 030 (CODEN Designation) of the MARC bibliographic record that represents the description of the item for which a separate holdings record is created. It may also contain any canceled or invalid CODEN from subfield $z of field 030 in the bibliographic record.

Field 030 is NOT repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 030	CODEN Designation	NR
Indicator:
First	Undefined; contains a blank
Second	Undefined; contains a blank

Subfield code:
$a	CODEN	NR
$z	Canceled/invalid CODEN	R
$6	Linkage	NR
$8	Field link and sequence number	R

Input conventions:

Structure

Embedded holdings information