Communication technology update / 
editor,  August E. Grant in association with Technology Futures, Inc. 
 - 5th ed. 
 - Boston :  Focal Press,  1996 
 - 372 p. ;  28 cm. 
<br/><br/><label>ISBN: </label>0240802799  RM82.23 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication