Gupta, Prakash C. <br/><br/>
Data Communications and Computer Networks 

 - New Delhi:  PHI Learning,  2006. 
 - xxvii, 800  ( R14,SH 01). 
<br/><br/><label>ISBN: </label>9788120328464 
<br/><br/><label>Source: </label> Punjab Book   PKR 781.65 
<br/><br/><label>Dewey Class. No.: </label>004.6