Roy, K.P. . <br/><br/>
Statistical Techniques in Commerce and Economics /  Textual Documents 
K.P. Roy. 
 - 4th ed. / 
 - Calcutta :  Progressive Publishers ,  1969. 
 - 359p. ;  22cm. 
<br/><br/><label>Subjects--Index Terms: </label>Statistics G-Statistics 
<br/><br/><label>Dewey Class. No.: </label>311.23  / R 812 St