id author title date pages extension mime words sentence flesch summary cache txt crl-13171 Cogswell, James A. On-Line Search Services: Implications for Libraries and Library Users 1978-07-01 6 .pdf application/pdf 3904 180 54 But while user charges may be a neces- sary complement to on-line search services, it should be recognized that their imposition may cause patrons, with heightened expec- tations toward efficient information re- trieval, to feel justified in demanding im- provements in related library services. This approach, which is the preferred method of rendering search services at Penn (and at most other academic libraries), 6 permits the personal, one-to-one exchange between re- questor and reference professional, which maximizes the interactive capabilities of on- line searching. cache/crl-13171.pdf txt/crl-13171.txt