Communication technologies and information flow / edited by Maxwell Lehman, Thomas J.M. Burke. - New York : Pergamon Press, c1981. - xvii, 151 p. : ill. ; 24 cm. - Pergamon policy studies on science and technology . Includes bibliographical references and index. ISBN: 0080271693 0080275281 (pbk.) LCCN: 80028475 Subjects--Topical Terms: Telecommunication. Dewey Class. No.: 621.38 / COM 1981