Gupta SR <br/><br/>
Statistical method. 
Gupta SR 
 - New Delhi  Sultan Chand       1991 
 - xxi,Various pagination.  cm. 
<br/><br/><label>Standard No.: </label>61198 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B28, N1