SINHA, R.K. <br/><br/>
Mineral economics ( a text book for university students) 

 - Oxford & IBH pub.  New Delhi  1970 
 - xvi, 317 p. 
<br/><br/><label>ISBN: </label>31620 
<br/><br/><label>Dewey Class. No.: </label>338.2  / SIN