TY  - RPRT
TI  - Geologic map of the Three Buttes Quadrangle, Richland and Roosevelt counties, Montana
AU  - R. B. Colton
PY  - 1979
DO  - 10.3133/mf1111
UR  - https://pubs.usgs.gov/publication/mf1111
ID  - mf1111
ER  -