DCM Z1:  5XX  See Also From Tracings - General Information


When otherwise modifying a NAR that contains codes that are no longer used such as subfield $w position zero (0) code "d" or "f," LC/PCC catalogers should upgrade the NAR to RDA.

LC/PCC catalogers applying RDA instructions may use subfield $i (Relationship information) in conjunction with subfield $w code "r" for relationship designators.  When applying RDA relationship designators in 5XXs, supply terms from Appendix I, J or K; capitalize the initial letter of the term and follow the term with a colon.

Until a decision is reached by the PCC Policy Committee on the use of relationship designators in authority records, LC/PCC catalogers may continue to use the subfield $w codes "a" (earlier) and "b" (later) or optionally use the appropriate relationship designators from Appendix K to provide relationship links between corporate entities (510 or 511).

See the 500, 530, and 551 sections of DCM Z1 for information on the use of relationship designators and/or $w codes in those fields.

Subfield $w - Control subfield:

Follow the conventions in the authority format for use of subfield $w.  Do not supply subfield $w unless a value other than "n" would be appropriate in one of the positions.  When supplying subfield $w, give it as the first subfield in the field.  Supply character positions preceding, but not succeeding, the value, e.g.,

$w a = to indicate a reference from an earlier authorized access point

$w b = to indicate a reference from a later authorized access point

$w r  = to indicate that a subfield $i or subfield $2 is used to denote relationship information

$w nnnc = to indicate a see also reference for multiple pseudonyms (record also contains a 663 field)


A see also reference tracing (5XX) must not normalize to the same as another see also reference in the same authority record, unless both 5XX fields contain a relationship designator in subfield $i, and the texts of the relationship designators are different.


LC series practice:  As of June 1, 2006, LC does not create or update SARs.

PCC series practice:  Transcription of the series statement is mandatory if applicable.  Searching for series authority records, tracing the series, and the creation and maintenance of series authority records are optional.

For more information on DCM Z1 Instructions, select:

DCM Z1:  Introduction