TY  - RPRT
TI  - Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1972
AU  - George Vincent Cohee
AU  - W.B. Wright
PY  - 1974
DO  - 10.3133/b1394a
UR  - https://pubs.usgs.gov/publication/b1394A
ID  - b1394A
ER  -