Sinha, R. K <br/><br/>
Mineral economics. (3rd ed.) 

 - 3rd. ed. 
 - New Delhi:  Oxford & IBH Publishing Co  1980 
<br/><br/><label>ISBN: </label>8120403312 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERALS<br/>MINERAL ECONOMICS
<br/><br/><label>LC Class. No.: </label>HD 9506 Sin