id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-11905	Balay, Robert; Gardner, John	An Inexpensive Information Retrieval System using Coordination of Terms With Edge-Notched Cards	1966	6	.pdf	application/pdf	3189	138	59	The pack of Keysort cards is then needled for these code numbers. As the collection grows, so does the file of Keysort cards, and the time and labor involved in needling becomes correspondingly greater.9 The system 9 One device adopted to reduce needling time was to use only shallow punches until they were exhausted, then assigned code numbers requiring deep punches.	cache/crl-11905.pdf	txt/crl-11905.txt