Boericke, William F. <br/><br/>
Prospecting and operating small gold placers / 
by William F. Boericke 
 - 2nd ed. 
 - New York :  Wiley,  1936. 
 - xi, 145 p. :  ill. ;  19 cm. 
<br/><br/><label>ISBN: </label>0471085146 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold mines and mining.<br/>Placer deposits.
<br/><br/><label>Dewey Class. No.: </label>622.3422