Twelve papers written by fifteen authors from nine countries comprise this collection which embraces many of the crucial problems facing modern information science and scientific information activities, ranging from information needs of scientists and specialists to the specific aspects of computerization of various information processes. The papers are: Studies of Information Needs; Informal Communication in Science; Some Sociological Aspects of Formal Systems for the Communication of Knowledge; The Aging of Scientific Literature; Conflicting Phenomena in IR Systems; Problems of Data Retrieval And Dependent Techniques; A Condensed Heuristic Documentation System; Proposal and Wishes for an Open Structure in the Communication of Information; The Future of Access (Abstracting and Indexing) Services; Integrated Information Systems; The Activities of Excerpta Medica; and, The Use of Computers in Scientific, Technical and Economic Information in Poland. (Author/SJ)