TY  - RPRT
TI  - Preliminary geologic map-city of Great Falls and vicinity, Montana
AU  - Richard Walter Lemke
AU  - Edwin K. Maughan
PY  - 1955
DO  - 10.3133/ofr5593
UR  - https://pubs.usgs.gov/publication/ofr5593
ID  - ofr5593
ER  -