This book is an introduction to the practical and theoretical concepts of information science. The author draws on recent research into the field of information science, as well as from scholarly and trade publications, and includes articles by Harold Borko, Klause Otten, and Anthony DeBons to emphasize the long-standing dissension in the field. In addition to a brief history of information science, key topics covered include: communications and cognition, information retrieval, bibliometrics, modeling, economics, information policies, and the impact of information technology on modern management. (Includes an index.) (AEF)