LC Guidelines:  042  Authentication Code

NACO:

This field may be supplied only by national bibliographic agencies in consultation with LC’s Policy, Training, and Cooperative Programs Division.  Other NACO participants should not supply, update, or delete this field.

Do not use subfields: $6, $8

SACO:

Do not use this field.


LC:

NAMES/SERIES:

Do not use this field.

LC does not maintain this field.

SUBJECTS:

Do not use this field.

For more information on LC Guidelines, select:

Introduction  (LC Guidelines)

LC Guidelines