039 Core Record Designator (NR) (Variable Data Fields)
Codes
First and Second indicators:
# Undefined
Subfield:
a Core record designator (NR)
Description/Instructions
Field 039 is used to indicate that a record has been created at the core level, as defined in CEG B6. Use of field 039 is an interim measure until encoding level "4" is fully implemented by OCLC.
Field 039 is not distributed. On output, OCLC converts 039 $a to Leader/17 (encoding level) value "4."
Prior to March 1996, the word "core" was input in field 040 $e.
Related fields, etc.
See also:
Section E. MARC 21 Format for Serials as Applied Within CONSER