GUPTA, C.B. <br/><br/>
AN INTRODUCTION TO STATISTICAL METHODS 

 - 7th Ed. 
 - New Delhi  Vikas Publishing House Pvt. Ltd, New Delhi   1976 
<br/><br/><label>ISBN: </label>0706904591 
<br/><br/><label>Dewey Class. No.: </label>519.54  / GUP/A