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

 - 30th rev. 
 - New Delhi, India  Sultan Chand and Sons  2001 
 - xx,1425p. 
<br/><br/><br/>RSPEE 
<br/><br/><label>ISBN: </label>81-219-0827-2 
<br/><br/><label>Source: </label>Textual