Explores aspects of information retrieval complexity, specifically the demands on users and information systems, using a proposed query as an example. Discusses previous writings on subject access, search strategies and retrieval potential, and classification as a retrieval tool. An appendix shows the subject headings assigned to books in a…

This review of the research on the use of card catalogs and online catalogs highlights research methodologies and significant findings. Discussion of the results focuses on user needs and satisfaction, and the need to separate bibliographic practices that are universally sound from those that are an adaptation to the medium. (CLB)

Reports results of a material-availability study in which library users were surveyed to determine their success in obtaining materials. Both OPAC users and CD-ROM journal-index users were studied and transaction logs verified their self reports. Recommendations for reducing search failures are discussed. (Author)