Brown, Walter Lee,  1853-1904. <br/><br/>
Manual of assaying gold, silver, lead, copper / 
Walter Lee Brown 
 - Eleventh edition 
 - 560 pages :  illustrations ;  19 cm 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Assaying
<br/><br/><label>LC Class. No.: </label>TN550  / BRO