TY  - BOOK
T1  - Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1979 /
DA  - 1980.
CY  - Washington :
AU  - Sohl, Norman F.
AU  - Wright, W. B.
CN  - QE75
CN  - QE75
PB  - U.S. Govt. Print. Off.,
PP  - Washington :
PY  - 1980.
ID  - 119703
KW  - Geology, Stratigraphic
TI  - Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1979 /
ER  -