Gupta, Rajiv. Nagarth, I J. <br/><br/>
Introduction to systems 

 - 1st ed. 
 - New Delhi  New Age International  2005 
 - xiii, 551 
<br/><br/><label>ISBN: </label>9788122415995 
<br/><br/><label>Dewey Class. No.: </label>658.05  GUP;1  R