id author title date pages extension mime words sentence flesch summary cache txt crl-12988 American Library Association, Letters 1977-05-01 4 .pdf application/pdf 2279 102 56 It is indeed time for statistically sound research studies that will accurately mea- sure total library use and, not only all of the factors that result in user frustration, but also the disastrous effects on research in American universities of over-dependence on cooperation as a substitute for adequate research collections.-Melvin ]. Most ob- servers believe that, in open-shelf research libraries, total use is on the order of ten times circulation. cache/crl-12988.pdf txt/crl-12988.txt