id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-13038	Wittig, Glenn R.	Dual Pricing of Periodicals	1977	7	.pdf	application/pdf	3552	153	54	Applied science, biological-agricultur- al, and education periodicals were free of the dual price phenomenon in the early years of the survey; and the for- mer two, along with library periodicals, remained less than 15 percent by 1975. The L] annual survey, however, cites only a single average price per category; a distinction in subscription rates is not made.	cache/crl-13038.pdf	txt/crl-13038.txt