TY  - RPRT
TI  - Preliminary geologic map of the northwest part of the Flint Hill quadrangle, Fall River County, South Dakota
AU  - Henry Bell
AU  - E.V. Post
PY  - 1957
DO  - 10.3133/mf61
UR  - https://pubs.usgs.gov/publication/mf61
ID  - mf61
ER  -