O'Harra, Cleophas C.  1866-1935. <br/><br/>
A bibliography of the geology and mining interests of the Black Hills region, 
by Cleophas C. O'Harra. 
 - Rapid City, So. Dak.,  1917. 
 - 216, 7 p.  front. (fold. map)  23 cm. 
 - South Dakota. School of Mines. Bulletin  no. 11. Dept. of Geology .
 - South Dakota School of Mines and Technology.  Bulletin ;  no. 11. .
<br/><br/><label>LCCN: </label>gs 17000344  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Black Hills (S.D. and Wyo.)--Bibliography.<br/>Mines and mineral resources--Black Hills (S.D. and Wyo.)--Bibliography.
<br/><br/><label>LC Class. No.: </label>TN24.S8  / A3 no. 11