Character position definition and scope:

A one-character alphabetic code that indicates whether field 153 (Classification Number) contains a single number, a defined number span, or a summary number span.  A record containing code c (Index term record) in 008/06 (Kind of record) contains code n in this character position.

Guidelines for applying content designators:

Code:

Description:

a

Single number

b

Defined number span

c

Summary number span

n

Not applicable

Scheme-specific conventions:

Library of Congress Classification

Dewey Decimal Classification

Related MARC fields or documents:

X53  Classification Numbers - General Information

762  Table Identification

For information on other 008 character positions, see:

008  Fixed-Length Data Elements

See also:

Variable Control Fields