The design and study of library information networks are enhanced by the use of the concepts which have been developed by graph theorists. This paper proposes a general network structure which is a good model for a wide variety of library and other information networks. (4 references) (Author/NH)

This paper examines the nature of decision making in libraries, with the view of learning what qualities ought to be developed while in a library school. The concluding section raises questions that must be answered before operations research (O.R.) can be successfully integrated into a library school curriculum. (7 references) (Author/NH)

The variable" loan and duplication policy which was developed is described and also the considerable impact of implementation. The work is presented as a case study in library O.R. The great importance of analyzing the structure of problems is stressed and the nature and usefulness of models is described. (9 references) (Author/NH)

A model is presented which indicates the increase in use of information referral centers to be expected for a given level of service. Another model analyzes a directory to a data base and introduces the concept of zoomability" as a means for improving directory performance. (29 references) (Author/NH)

This article focuses on storage models for libraries, first considering the Dewey classification system from this perspective and then summarizing more current research carried out under the direction of the author with a grant from the National Science Foundation. (33 references) (Author/NH)