TY  - RPRT
TI  - Preliminary geologic map of [NW] part of the Flint Hill quadrangle, Fall River County, South Dakota, figure 5
AU  - Henry Bell
AU  - Edwin Van Horn Post
PY  - 1955
DO  - 10.3133/ofr559
UR  - https://pubs.usgs.gov/publication/ofr559
ID  - ofr559
ER  -