Gupta, Prakash C. <br/><br/>
Data communications and computer networks. 
Prakash C.Gupta 
 - New Delhi.  PHI Learning Pvt. Ltd.  2011 
 - xxvii, 800 
<br/><br/><label>ISBN: </label>9788120328464 
<br/><br/><label>Dewey Class. No.: </label>004.64404 GU-D