TY  - RPRT
TI  - Preliminary geologic map of the Chalky Buttes area, Slope County, North Dakota
AU  - George William Moore
AU  - Robert E. Melin
AU  - Roy Clark Kepferle
PY  - 1956
DO  - 10.3133/coal38
UR  - https://pubs.usgs.gov/publication/coal38
ID  - coal38
ER  -