Communication systems 

 - New Delhi  Prentice - Hall  2004 
 - ix, 458p.  23cm. 
<br/><br/><label>ISBN: </label>8120325591 
<br/><br/><label>Subjects--Topical Terms: </label><br/>communications networks
<br/><br/><label>Dewey Class. No.: </label>621.382  / COM