id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-11864	Jain, A. K.	Sampling and Short-Period Usage in the Purdue Library	1966-04-30	8	.pdf	application/pdf	4332	220	77	But for DDC 370-379 the pattern was quite different: titles published before 1904, during 1904-1913, and 1934-1943 had about the same relative usage which was higher than the relative usage for titles pub- lished during 1914-1933. An attempt was made to fit a re- gression model for titles in English by quantifying the last three in- dependent variables with relative usage as the dependent variable.	cache/crl-11864.pdf	txt/crl-11864.txt