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

 - New Delhi  Sultan Chand and Sons  2008 
 - 1.1-14.29p......i-xi 
<br/><br/><label>ISBN: </label>978-81-8054 -457-5 
<br/><br/><label>Dewey Class. No.: </label>519.5   Gup.P8