Gupta, S P <br/><br/>
Statistical Methods / 
S P Gupta 
 - 20th Ed. 
 - New Delhi:  Sulthan Chand&Sons,  2001. 
 - 1425p 
<br/><br/><label>ISBN: </label>9788170147879 
<br/><br/><label>Dewey Class. No.: </label>519.5  / GUP/S