Patri, Digambar <br/><br/>
Quantitative Techniques / 
Digambar  Patri ; D N Patri 
 - 1st ed. 
 - Ludhiana:  Kalyani Publishers,  2003. 
 - 343p 
<br/><br/><label>ISBN: </label>8127209635 
<br/><br/><label>Dewey Class. No.: </label>519.5  / PAT/Q