TY  - RPRT
TI  - Four newly named tongues of Eocene Green River Formation, northern Piceance Creek basin, Colorado
AU  - Donald Cave Duncan
AU  - W. J. Hail
AU  - R. B. O'Sullivan
AU  - G. N. Pipiringos
PY  - 1974
DO  - 10.3133/b1394f
UR  - https://pubs.usgs.gov/publication/b1394F
ID  - b1394F
ER  -