Roddy, Dennis  . <br/><br/>
Electronic communications /  
by Dennis Roddy and John Coolen. 
 - 4th ed /   . 
 - Delhi :   Pearson education ,   2004. 
 - x,820p. :   ills.,figs. ;   25cm .  
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>9788129701060  Rs. 675.00 
<br/><br/><label>Subjects--Index Terms: </label>ELECTRONICS 
<br/><br/><label>Dewey Class. No.: </label>621.38  / ROD/E