TY  - RPRT
TI  - Geologic map of the lower Piceance Creek area, northwestern Colorado
AU  - W. J. Hail
AU  - G. N. Pipiringos
PY  - 1990
DO  - 10.3133/i1936
UR  - https://pubs.usgs.gov/publication/i1936
ID  - i1936
ER  -