Communication technologies and information flow / 
edited by Maxwell Lehman, Thomas J. M. Burke. 
 - New York :  Pergamon Press,  1981. 
 - 151 p. :  ill. ;  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0080275281 (pbk.) 0080271693 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.