Shay, William A. <br/><br/>
Understanding data communications and networks / 
William A. Shay. 
 - 3rd ed. 
 - Hyderbad ;  B S Publications :  Thomson Brooks/Cole,  c2010. 
 - xxv, 766 p. : 
<br/><br/><label>ISBN: </label>9788178001791 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.
<br/><br/><label>Dewey Class. No.: </label>004.738.5  / SHA