Boericke W F <br/><br/>
Prospecting and operating small gold placers 

 - 2 
 -  1936 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>45967 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Gold<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H118:15, G6