Richards Robert H. <br/><br/>
Textbook of ore dressing 

 - 3 
 -  1940 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>67271 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building engineering
<br/><br/><label>Dewey Class. No.: </label>D3:2, H0