Barry, John R. <br/><br/>
Digital communication / 
Barry, John R. 
 - 3rd ed 
 - New Delhi:  Springer,  2006. 
 - xvi,838p.;24cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>8181283430 
<br/><br/><label>Dewey Class. No.: </label>621.38 BAR