Encyclopedia of telecommunications  

 - San Diego:   Academic Press, Inc.,   1989 
 - xi, 575p.  
<br/><br/><label>ISBN: </label>0-12-226691-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunications 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopedia  
<br/><br/><label>Universal Decimal Class. No.: </label>R 621.39(031)  / M9