Gupta,  S. P. & Gupta M.P. <br/><br/>
Business Statistics 

 - New Delhi  Himalya pub. house pvt. ltd  2011 
 - 712p. 
<br/><br/><label>ISBN: </label>81-8054-641-9 
<br/><br/><label>Dewey Class. No.: </label>519.       Gup.Q1