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

 - 7th ed 
 - Prentice-Hall of India, New Delhi  2007 
 - xxvii,751 
<br/><br/><label>ISBN: </label>978-81-203-3411-3 
<br/><br/><label>Dewey Class. No.: </label>621.38 Cou