Kennedy, Gedge and Davis, Bernard. <br/><br/>
Electronic communication system / 

 -  Tata McGraw-Hill,  c2003. 
 - 0  ill. ; 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>LC Class. No.: </label>4169 
<br/><br/><label>Dewey Class. No.: </label>621.38