id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-12274	Irvine, Betty Jo	Slide Classification: A Historical Survey	1971-01-01	8	.pdf	application/pdf	4902	209	55	The historical background of slide collections is treated, with biblio- graphic references. The major portion of the paper reports and ana- lyzes some of the data derived from a 1968 questionnaire directed to institutions having slide collections.	cache/crl-12274.pdf	txt/crl-12274.txt