Hazarika,Padmalochan. <br/><br/>
A textbook of business statistics 

 - 07rev ed. 
 - New Delhi:  S.Chand. 
 - 490. 
<br/><br/><label>ISBN: </label>81-219-2456-1 
<br/><br/><label>Dewey Class. No.: </label> / HAZ