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

 - 9th 
 - New Jersey  Pearson Education  2011 
 - 881 p. [3]  Illustration  22 cm 
<br/><br/> Data and Computer Communications 
<br/><br/><label>ISBN: </label>9780132172172 0132172178 
<br/><br/><label>Universal Decimal Class. No.: </label>004.7  / STA