Levels of question formulation in negotiation of information need during the online presearch interview: A proposed model
on the inclusiveness of systems for retrieval documents indexed by unweighted descriptors
A microprocessor architecture for bibliographic retrieval system
A general model of query processing in information retrieval systems
Relative impact of print and database products on database producer expenses and income—Trends for database producer organizations based on a thirteen year financial analysis
Multilevel information system— Towards more flexible information retrieval systems
Interaction of libraries and publishers
The literature of library and information science, parts I and II: Edited by George S. Bobinski. Drexel Library Quarterly 15 (1 and 3), January and July 1979, Received in libraries February and November 1980 respectively. Part I, 100 pp.; Part II, 119 pp. $6.00 each or $11.00 for both, postage included. ISSN-0012-6160.
Online searching: An introduction: W.M. Henry et al. Butterworths, London, 1980, 209pp., £12.00. LC 90-40242. ISBN 0-408-10696-4.
Introduction to comparative librarianship: Douglas J. Foskett, Sarada Ranganathan Endowment for Library Science, Bangalore, 1979, 52 pp.