Roddy, Dennis <br/><br/>
Electronic communications / 
Dennis Roddy and John Coolen. 
 - 4th ed. 
 - New Delhi :  Prentice Hall of India Pvt. Ltd.,  1997 
 - ix, 820 p. :  ill. ;  26 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>8120309847 013312083X 
<br/><br/><label>LCCN: </label>94014041 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.
<br/><br/><label>Dewey Class. No.: </label>621.89  / ROE