Communication technology update / 
edited by August E. Grant & Jennifer Harman Meadows. 
 - 6th ed. 
 - Boston :  Focal Press,  1998. 
 - vii, 327 p. :  ill. ;  28 cm. 
<br/><br/> Open Access. 
<br/><br/><label>ISBN: </label>0240803264 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication--Technological innovations--Periodicals.