Forouzan, Behrouz A. <br/><br/>
Data communications and networking 

 - 2nd ed. 
 - New Delhi  Tata McGraw - Hill Publishing company Ltd.,  2003 
 - xxxii,944p.  24 cm.PB 
<br/><br/><label>ISBN: </label>0070499357 
<br/><br/><label>Dewey Class. No.: </label>004.6  / FOR