Examines methodologies underlying studies which measure the information economy and considers their applicability and limitations for analyzing policy issues concerning libraries and library networks. Two studies provide major focus for discussion: Porat's "The Information Economy: Definition and Measurement" and Machlup's…

Twenty-one libraries in Library Computer System participated in collection overlap study. Findings of random sample representing 1% of each collection indicate that high percentage of titles, 69.4%, occurred only once in network and that percentage of each library's collection unique to that library, ranged from 6.1% to 68.4%. (21 references) (EJS)

Discusses hypotheses which examine, for a nonprogramed decision, variables of (1) individual decision makers, (2) information upon which choices are based, and (3) structural features within which decision is made. Circumstances under which decision-making group (Ohio's librarians) selected an innovative alternative (incorporation of OCLC) are…

This survey is designed both to update data reported in the survey of library networks and cooperative organizations conducted by the National Center for Education Statistics in 1977-78 and to provide more specific data that will make possible more sophisticated analyses of the status of library networks and cooperative library organizations.…