TY  - RPRT
TI  - Geologic map of the Opheim 1° x 30' quadrangle, Valley and Daniels counties, Montana
AU  - R. B. Colton
AU  - S. T. Whitaker
AU  - W. C. Ehler
PY  - 1989
DO  - 10.3133/ofr89319
UR  - https://pubs.usgs.gov/publication/ofr89319
ID  - ofr89319
ER  -