Gupta , S.P. and Gupta , Uma <br/><br/>
Statistical Methods 

 - New Delhi  Sultan Chand and Sons  2007 
 - 1-710;A1-A260;1-42p. 
<br/><br/><label>ISBN: </label>978-81-8054-684-6 
<br/><br/><label>Dewey Class. No.: </label>519.5   Gup.P7