Couch, Leon W. <br/><br/>
Digital and analog communication systems / 

 - 8th ed. 
 - New Delhi :  Pearson Education,  c2014. 
 - 676 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9789332518582 
<br/><br/><label>LC Class. No.: </label>21666-21670 
<br/><br/><label>Dewey Class. No.: </label>621.382  / COU