TY  - BOOK
T1  - The Geologic story of Yellowstone National Park,
DA  - 1971]
CY  - [Washington;
AU  - Keefer, William R.,
CN  - QE75
CN  - QE75
CN  - QE79
PB  - For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
PP  - [Washington;
PY  - 1971]
ID  - 7545
KW  - Geology
TI  - The Geologic story of Yellowstone National Park,
ER  -