id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
5293	McCallum, Sally H.; Godwin, James L.	Statistics on Headings in the MARC File	1981-09-01	8	.pdf	application/pdf	3940	422	70	counts were made of the number of bibliographic records, headings that appear in Thus, a file of records containing the distinct headings from a set of bibliographic records is equivalent in size to a MARC authority file of the headings in those bibliographic records. MARC II bibliographic record files maintained internally at LC: books, serials, normalized AP records were used to produce the counts of distinct headings by clustering like data strings. Number of Records Added to Each File by Year Table 2 presents the number of occurrences of name headings in the MARC bibliographic files and the number of distinct The number of distinct headings that were new to the file in a year was while 1 ,308,193 of the headings that appeared on the records were personal names, corporate, conference, topical, and geographic headings that appear in the bibliographic files. additional 100 bibliographic records approximately 298 name and subject headings 	./cache/5293.pdf	./txt/5293.txt