Gupta P. C. <br/><br/>
Data communications and computer networks 

 - 4 . Ed. 
 - New Delhi  PHI Learning Private Limited  2009 
 - 800p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INFORMATION TECHNOLOGY
<br/><br/><label>Dewey Class. No.: </label>1.6