154 General Explanatory Index Term (NR) (Variable Data Field)
Field definition and scope: This field contains a general explanatory term from the index to the classification scheme that is identified in field 084 (Classification Scheme and Edition) . Field 154 is appropriate only in an index term only record (008/06 Kind of record , code c) that is created because the index term cannot be accommodated in a 70X-75X Index Term field in a schedule or table record (008/06, code a or b) that contains a classification number in field 153 (Classification Number) . This occurs when the index term is not associated with one classification number or span. Field 753 (Index Term - Uncontrolled) is always used in a record containing field 154 to direct the user to different locations within the classification scheme for classifying the topic.
Field 154 is NOT repeatable .
Guidelines for applying Content Designators:
Indicators Undefined; each contains a blank (#)
Subfield Code
$a General explanatory index term (NR)
Related USMARC fields or documents:
084 Classification Scheme and Edition
See also:
1XX Classification Numbers and Terms: Contents
