Guidelines for Usage: 665 History Reference

NACO LSP Usage:

Do not use this field. Connect sequences of related headings by 5XX See Also From Tracing fields with their $w/0 subfields appropriately coded.

LC Usage:

LC does not use this field. Appropriately coded subfield $w/0 in 5XX See Also From Tracing fields are used to connect sequences of related headings. A 665 field in a record created prior to February 1981 is deleted and the 5XX fields are adjusted whenever the 665 field must be changed for any reason.

For more information on LC Guidelines, select:

Guidelines for Usage: NACO/LSP and LC