060 NATIONAL LIBRARY OF MEDICINE CALL NUMBER (R)
Indicators First Existence in NLM collection # No information provided 0 Item is in NLM 1 Item is not in NLM Second Source of call number # No information provided OBSOLETE 0 Assigned by NLM 4 Assigned by agency other than NLM
Subfield Codes $a Classification number (R) $b Item number (NR)