Guidelines for Usage: 050 Library of Congress Call Number

NACO LSP Usage:

Only call numbers assigned by the Library of Congress are permitted in this field. Call numbers assigned by other organizations are contained in field 090 (Local Call Number). See the LC guidelines for 09X (Local Call Numbers) for more information on field 090.

Use a # (blank ) in the second indicator position. Do not use value 0 or 4. LC has not implemented value 0 or 4.

Do not use the following subfields:

$5 - Institution to which field applies

$6 - Linkage

These subfields have not been implemented in the LC system.

LC Usage:

LC has not implemented second indicator values 0 and 4 nor subfields $5 and $6.

LC uses subfield code $u (Custodial location) for local information.

Special LC call numbers:

Field 050 may contain call numbers that do not follow the Library of Congress classification schedules, for example:

050 ##$aLAW

050 ##$aMicrofilm 85/20,233

050 ##$aWMLC L 82/1234

Related MARC field or document:

09X Local Call Numbers

For more information on LC Guidelines, select:

Guidelines for Usage: NACO/LSP and LC

To return:

Use the key.