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

 - New Delhi  Tata McGraw-Hill Pub. Com. Ltd..  2004 
 - xxxiv,973p.  25cm. 
<br/><br/><label>ISBN: </label>0070584087 
<br/><br/><label>Dewey Class. No.: </label>621.3981  / F65D