Roddy, D <br/><br/>
Electronic communications 
Dennis Roddy, John Coolen 
 - New Delhi  Prentice-Hall of India  1978 
 - ix, 706 p. : ill. ; 24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication<br/>Electronics