Gupta, S. P.  <br/><br/>
Statistical methods /      
S.P. Gupta, Archana Agarwal. 
 - 8th ed. 
 - New Delhi :   Sultan Chand & Sons,   2010. 
 - 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>--<br/>--<br/>Statistics.--