Black, Jack <br/><br/>
Gold prospectors handbook / 
by Jack Black. 
 - Pico Rivera :  Gem Guides,  1987. 
 - 176 p. 
<br/><br/><label>ISBN: </label>935182322 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Prospecting--Handbooks, manuals<br/>Gold--Handbooks, manuals