Electronic Communication Systems/ 
George Kennedy 
 - 3rd 
 - New Delhi :  McGraw Hill,  1998 
 - xx, 741p. 
<br/><br/><label>ISBN: </label>0-07-468182-3  Rs. 240.00 
<br/><br/><label>Dewey Class. No.: </label>621.384  / K351