210 Abbreviated Title

Field definition and scope:

Field 210 contains a title of the item as abbreviated for purposes of indexing or identification. An abbreviated key title is supplied by ISSN centers, based on the Key Title (field 222). Other abbreviated titles are supplied by cataloging agencies, including abstracting and indexing services. The abbreviated title may be created by the agency supplying the field or it may be taken from the piece. The abbreviated title is an agency-assigned data element.

The National level record requirement for this field is Optional.

Field 210 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 210	Abbreviated Title	O	O	R
Indicator:
First	Title added entry	M
0	No added entry	A
1	Added entry	A

Second	Type	M
#	Abbreviated key title	A
0	Other abbreviated title	A

Subfield code:
$a	Abbreviated title	M	O	NR
$b	Qualifying information	A	O	NR
$2	Source	A	O	R
$6	Linkage	A	O	NR
$8	Field link and sequence number	O	O	R

Input conventions:

Content designator history:

First Indicator - Title added entry [new, 1977]: Records created prior to the definition of the first indicator in 1977 may contain # (blank) meaning undefined in this position.

Second Indicator - Type [new, 1998]: When field 210 was redefined to include non-key title abbreviations in 1998, value # (blank) was redefined to identify key titles. Value blank in pre-1988 records also identifies key titles since only key title abbreviations allowed in the field before that date.

In 1999, field 210 was renamed from Abbreviated Key Title to Abbreviated Title.