Gupta, S. P. <br/><br/>
Elementary statistical methods  Elementary statistical methods._17th Ed, V. 1 & 2, New Delhi : Sultan Chand & Sons, 2006 

 - 17th 
 - New Delhi  Sultan Chand & Sons  2006 
<br/><br/><label>Dewey Class. No.: </label>311  / G955E