id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-14518	American Library Association, 	Letters	1989-11-01	2	.pdf	application/pdf	881	53	40	Thus, we are pleased that unobtrusive testing has increased profes- sional attention on issues related to the quality of reference service, correct answer fill rates, and techniques for assessing the quality of various aspects of reference services. To the Editor: Recent articles such as those by Whitlatch 1 and Douglas2 have discussed the use and ap- propriateness of unobtrusive testing of reference services.	cache/crl-14518.pdf	txt/crl-14518.txt