TY  - BOOK
AU  - Sohl,Norman F.
AU  - Wright,Wilan B.
ED  - United States Geological Survey (U.S.)
TI  - Changes in stratigraphic nomenclature by the U.S. Geological Survey
U1  - 551.700973 
PY  - 1978///
CY  - Washington, D.C.
PB  - United States Geological Survey
KW  - Geology, Stratigraphic
KW  - Nomenclature
KW  - United States
N1  - Description based on: 1979
ER  -