666 General Explanatory Reference - Name (NR) (Variable Data Field)

Field definition and scope:

Field 666 contains text that explains how names having a common characteristic (e.g., surnames with separately written prefixes) are entered in a file.

Field 666 is appropriate only in an untraced reference record .

NOTE:

The 1XX field in the record contains the unestablished data element referred from.

Field 666 contains the explanatory information.

The heading in the 1XX field is not traced in a 4XX field in any established heading record for names beginning with the specified characteristic.

See example under the description of subfield $a (General explanatory reference) .

A cross reference display may be generated from the 1XX and 666 fields of the reference record. A reference instruction phrase is incorporated into the text of subfield $a. Examples of complex cross reference displays are provided in Reference Note Fields: Complex Cross References .

The National level record requirement for this field is Optional.

Field 666 is NOT repeatable .

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, National level (NLR) record requirements , and designator repeatability , see table below:

Input conventions:

Reference record fields

Punctuation

LC guidelines for usage:

666 General Explanatory Reference - Name

Related MARC fields or documents:

880 Alternate Graphic Representation

Tracing and Reference Fields - General Information

See also:

663-666 Complex Name References

Variable Data Fields