Richards, Robert H.  1844-1945. <br/><br/>
Ore dressing / 
by Robert H. Richards  
 - First edition  In four volumes (VOL. IV) 
 - xxv, 2052 pages :  illustrations ;  24 cm. 
<br/><br/> Paged continuously.  Library has, v.1-2. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ore-dressing.
<br/><br/><label>LC Class. No.: </label>TN500  / RIC