TY  - BOOK
AU  - O'Harra,Cleophas C.
AU  - Slouber,Joseph
TI  - A bibliography of the geology and mining interests of the Black Hills region,
T2  - South Dakota. School of Mines. Bulletin
AV  - TN24.S8 A3 no. 11
PY  - 1917///
CY  - Rapid City, So. Dak.
KW  - Geology
KW  - Black Hills (S.D. and Wyo.)
KW  - Bibliography
KW  - Mines and mineral resources
ER  -