Ray, H. S., Au. <br/><br/>
Extraction nonferous metals 

 - New Delhi  E. W. P.  1985 
 - 531p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Non ferous metals
<br/><br/><label>Dewey Class. No.: </label>669.0285  / R22E