Gupta, S P <br/><br/>
Statistical Methods / 
S P Gupta 
 - 41st ed. 
 - New Delhi:  Sulthan  Chand&Sons,  2011. 
 - 1425p 
<br/><br/><label>ISBN: </label>9788180548628 
<br/><br/><label>Dewey Class. No.: </label>519.5  / GUP/S