Boericke, William Fay,  1884- <br/><br/>
Prospecting and operating small gold placers / 
by William F. Boericke. 
 - 2nd ed. 
 - New York :  John Wiley,  1936. 
 - xi, 145 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold mines and mining.
<br/><br/><label>LC Class. No.: </label>TN421  / .B72 1936 
<br/><br/><label>Dewey Class. No.: </label>622.34