Gupta ,sp and Gupta p.k <br/><br/>
Business statistics and businiss mathematics 

 - New Delhi  Sultan chand and soons  2009 
 - 7.32 
<br/><br/><label>ISBN: </label>978-81-8054-605-1 
<br/><br/><label>Dewey Class. No.: </label>519      Gup. P9