Charles OF Au. <br/><br/>
Mineral Industry   its statistics, Technology and trade during 1912    

 - New York  Megrawhill book company. inc.        1913 
 - xv; 1090p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(H1).1.N12, E3.21