Sinha R K <br/><br/>
Minerals economics 

 - New Delhi   Oxford India          1970 
 - xvi, 317p  cm. 
<br/><br/> Bibliography: p 301-08 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minerals
<br/><br/><label>Dewey Class. No.: </label>X9(H1), L0