id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
5248	Avram, Henriette; De Gennaro, Richard; Pulsifer, Josephine S.; Rather, John C.; Rosenthal, Joseph A.; Veaner, Allen B.	Levels of Machine Readable Records	1970-06-01	6	.pdf	application/pdf	2196	178	64	desirable for national purposes: 1) the full MA.RC II format for distribution purposes; and 2) a less complex subset to be used by libraries reporting holdings to the National Union Catalog. purposes, considered levels of encoding detail of machine readable catalog records in relation to the conditions under which conversion might (tags, delimiters, subfield codes), and contents (data elements in simplify an individual record but does not simplify the content designators in the format because these elements are often present in other specification of levels really depended on the functions of machine readable catalog records from the standpoint of national use. Use of MARC Content Designators by 8 Library Systems or As noted above, the NUC function relates to the use of machine readable records to build a national union catalog. feasibility of defining a level of machine readable record for that purpose 2) In terms of national use, a machine readable record may function 	./cache/5248.pdf	./txt/5248.txt