Shay, William A <br/><br/>
Understanding data communications & networks/ 
William A. Shay 
 - 2nd 
 - New Delhi:  Thomson;  2001 
 - 711p. 
<br/><br/><label>ISBN: </label>9789812400505 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data communications<br/>Data networks
<br/><br/><label>Dewey Class. No.: </label>004.7 SHA