Emmons, William H.  1876- <br/><br/>
The enrichment of ore deposits / 
by William Harvey Emmons. 
 - Washington :  Govt. print. off.,  1917. 
 - 530 p. :  ill., vii pl (1 fold) diagr., ;  24 cm. 
 - U. S. Geological survey.  Bulletin  625. .
<br/><br/> At head of title: Dept. of the interior. 
<br/><br/>Bibliography: p. 20-33. 
<br/><br/><label>LCCN: </label>gs 17000189  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ore deposits.
<br/><br/><label>LC Class. No.: </label>TN263  / .E48