Gupta, S.P. <br/><br/>
Statistical methods 

 - 30 
 - New Delhi  : Sultan Chand and Sons,  2001 
 - xx, 1426p. 
<br/><br/><label>ISBN: </label>81-7014-896-0 
<br/><br/><label>Dewey Class. No.: </label>310 G959S