Singh, R.P. <br/><br/>
Communication systems:Analog and Digistal 

 - 1st Edition 
 - New Delhi  Tata McGraw/Hill  2006 
 - 592p. 
<br/><br/><label>ISBN: </label>9780074603390 
<br/><br/><label>Dewey Class. No.: </label>384  / SIN/C