Stallings, William. <br/><br/>
Data and computer communications 

 - 7th ed. 
 - Delhi  Pearson Education  2004 
 - xvi, 855 p.  ill.  25 cm. 
<br/><br/><label>ISBN: </label>8131715361 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.
<br/><br/><label>Dewey Class. No.: </label>004.6