Richards, Robert H.  1844-1945. <br/><br/>
Ore dressing, 
by Robert H. Richards ... 
 - 1st ed. ... 
 - New York,  London  The Engineering and mining journal; [etc., etc.]  1908. 
 - ix,4 volumes 645-1195pages  illustrations, diagrams. (part fold.)  24 cm. 
<br/><br/> Paged continuously.  Library has, v.1-2. 
<br/><br/>Bibliography at end of each chapter. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ore-dressing.
<br/><br/><label>LC Class. No.: </label>TN500  / RIC