Mazumdar,Ajanta. <br/><br/>
An Introduction To Commercial Arithmetic And Elements of Statistics 

 - 2nd rev. 
 - New Delhi:  S.Chand. 
 - 387. 
<br/><br/><label>ISBN: </label>81-219-2761-7 
<br/><br/><label>Dewey Class. No.: </label> / MAZ