gupta , sp and Gupta p.k <br/><br/>
business statics and business mathernatics 

 - New Delhi  Sultan chand and sons  2009 
 - BM 7.32p. 
<br/><br/><label>ISBN: </label>978-81-8054-605-1 
<br/><br/><label>Dewey Class. No.: </label>519.5    Gup.P9