S.P., Gupta. <br/><br/>
Statistical methods. 

 - New Delhi :  Sultan and sons,  1979. 
 - 216 p. 
<br/><br/><label>ISBN: </label> 25 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Correlation.<br/>Data processing.<br/>statistics.
<br/><br/><label>Dewey Class. No.: </label>311  / SUP-s