Guptha , S C <br/><br/>
Business statistics 
by  S C Guptha and Indra Guptha 
 - Mumbai  Himalaya Publishing House  2012 
<br/><br/><label>ISBN: </label>9788184880267 
<br/><br/><label>Dewey Class. No.: </label>519.5 GUP/BUS