id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-11233	Hawken, Williiam	Developments in Xerography: Copyflo, Electrostatic Prints, and O-P Books	1959	7	.pdf	application/pdf	5535	245	74	Because the printing MARCH 1959 F I G U R E 2 process is a continuous one, abrupt changes in density within the roll of microfilm cannot be compensated f o r by changes in exposure. i o n a l r u n n i n g time is charged f o r at a rate of fifty cents per minute up to a m a	cache/crl-11233.pdf	txt/crl-11233.txt