Guidelines for Usage: 360 Complex See Also Reference - Subject
NACO LSP Usage:
Do not use this field. Subject authority records are not within the scope of the present NACO LSP project.
LC Usage:
This field is used to record complex see also references as they appear in the Library of Congress online subjects authority file used in conjunction with the LC online names file (when appropriate) and the lists of free-floating subdivisions and other elements in the Subject Cataloging Manual: Subject Headings.
LC has not implemented subfield code $6 (Linkage).
For more information on LC Guidelines, select:
Guidelines for Usage: NACO/LSP and LC