Ray, H.S. <br/><br/>
Extraction of nonferrous metals 

 - New Delhi  East-West Press Pvt. Ltd.  2007 
 - xi,531p.  24cm. 
<br/><br/><label>ISBN: </label>8185095639 
<br/><br/><label>Dewey Class. No.: </label>669.0282  / R22E