TY  - BOOK
AU  - O'Harra,Cleophas C.
TI  - The Badland formations of the Black Hills region,
T2  - South Dakota school of mines.  Bulletin no. 9.  Department of geology
AV  - TN24.S8 A3 No. 9
U1  - (265) S2b no.9 
PY  - 1910///
CY  - Rapid City, S. Dak.
KW  - Geology
KW  - South Dakota
KW  - Geology, Stratigraphic
KW  - Tertiary
KW  - Vertebrates, Fossil
N1  - Bibliography: p. 135-144
ER  -