TY  - RPRT
TI  - Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1969
AU  - George Vincent Cohee
AU  - Robert G. Bates
AU  - W.B. Wright
PY  - 1970
DO  - 10.3133/b1324a
UR  - https://pubs.usgs.gov/publication/b1324A
ID  - b1324A
ER  -