TY  - RPRT
TI  - Geologic map of the Black Butte Mountain Quadrangle, Meagher County, Montana
AU  - L.W. McGrew
PY  - 1974
DO  - 10.3133/ofr74106
UR  - https://pubs.usgs.gov/publication/ofr74106
ID  - ofr74106
ER  -