Roddy, Dennis. <br/><br/>
Eletroniccommunication . fourth edition 

 - 4th edition. 
 - New Delhi :  Prentice Hall,  2007 
 - 820. 
<br/><br/><label>ISBN: </label>8120309847 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied physics
<br/><br/><label>Dewey Class. No.: </label>621.382  / ROD