Stallings, William <br/><br/>
Data and Computer communications 

 - 7th ed. 
 - Delhi  Pearson Education  2004 
 - 855p.  24 cm. PB 
<br/><br/><label>ISBN: </label>8129702061 
<br/><br/><label>Dewey Class. No.: </label>004.6  / STA