Sinha, R. K. <br/><br/>
Mineral economics 

 - New Delhi  Oxford and IBH Publishing  1980 
 - x,407p.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral economics
<br/><br/><label>LC Class. No.: </label>HD9506.A2S55