id author title date pages extension mime words sentence flesch summary cache txt crl-13384 Sargent, Seymour H. The Uses and Limitations of Trueswell 1979-09-01 8 .pdf application/pdf 5119 220 63 Fussier and Simon found that, of books that have accumulated equal shelf time, those that have never circulated have somewhat less chance than those that have circulated of being used during a given period in the fu- ture (Patterns in the Use of Books , p .32-33); but the difference is clearly not great enough to justify Trueswell' s procedure. Trueswell has given his research with respect to book collections, which was originally published in a series of articles dur- ing the 1960s, an apparently definitive sum- mary in Growing Libraries: Who Needs Them? cache/crl-13384.pdf txt/crl-13384.txt