Park, James  1857, <br/><br/>
The cyanide process of gold extraction :  A text-book for the use of metallurgist and students at schools of mines, etc. / 
By James park 
 - 2 # ed. re-written, enl. and illustrated 
 - viii, 142 páginas 
<br/><br/> Authorized text-book for n. z. government schools of mines" 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Endurecimiento superficial<br/>Oro--Metalurgia
<br/><br/><label>LC Class. No.: </label>TN165  / P37