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

 - 3rd ed. / R.K. Sinha and N.L. Sharma.  3rd ed. / R.K. Sinha and N.L. Sharma. 
 - New Delhi ; Oxford :  New Delhi ; Oxford :  IBH Pub.,  [1980] 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral industries -- zAfrica--Mineral industries -- zAfrica
<br/><br/><label>LC Class. No.: </label>HD 9506 SIN 1980