Stallings, William. <br/><br/>
Data and computer communications / 
William Stallings. 
 - 5th ed. 
 - New Delhi, India. :  Prentice Hall,  c1997 [2001 reprint]. 
 - xviii, 798 p. :  ill. (some col.) ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>8120312406 9788120312401 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.
<br/><br/><label>Dewey Class. No.: </label>004.6  / STD 2001