Gupta, S.P. <br/><br/>
Statistical methods: Containing besides theory 750 fully solved illustrations and about 1300 problems with answers 

 - 21 rev.ed. 
 - New Delhi  New Delhi, Sultan Chand & Sons Sultan Chand & Sons  1985 
<br/><br/><label>Dewey Class. No.: </label>311, G98S