Tiwari, s.k. <br/><br/>
Ore geology economic minerals and mineral economics 

 - New Delhi  Atlantic pub. & dist.  2014 
 - 381 to 748 
 -  2 .
<br/><br/><label>ISBN: </label>9788126914012 
<br/><br/><label>Dewey Class. No.: </label>553.1  / Tiw