TY  - BOOK
AU  - Keefer,William Richard
TI  - The geologic story of Yellowstone National Park,
T2  - Geological Survey bulletin 1347
AV  - QE75QE79 .B9 no. 1347
U1  - 557.3/08 s557.87/52 
PY  - 1971///]
CY  - [Washington
PB  - For sale by the Supt. of Docs., U.S. Govt. Print. Off.
KW  - Geology
KW  - Yellowstone National Park
N1  - Bibliography: p. 91-92
UR  - http://www.archive.org/details/geologicstoryofy00keef
UR  - http://www.openlibrary.org/books/OL4468778M
ER  -