Levels of machine readable records
Journal of library automation
Avram, Henriette D~De Gennaro, Richard~Pulsifer, Josephine S~Rather, John C~Rosenthal, Joseph A~Veaner, Allen B
Copyright (c) 1970 Information Science and Automation Division
Abstract: This study of the feasibility of determining levels or subsets of the established MARC II format concludes that only two levels are necessary and desirable for national purpose: 1) the full MARC II format for distribution; and 2) a less complex subset to be used by libraries reporting holdings to the National Union Catalog.