Business statistics / 
S.P. Gupta and M.P. Gupta. 
 - 18th ed. 
 - New Delhi :  Sultan Chand & Sons,  c2014. 
 - xx, 782 p. :  ill. ;  23cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business.<br/>Business statistics - Mathematics.<br/>Statistical theory - Business