TY  - RPRT
TI  - Preliminary geologic map of [east-central] part of the Flint Hill quadrangle, Fall River County, South Dakota, figure 7
AU  - Henry Bell
AU  - Edwin Van Horn Post
PY  - 1955
DO  - 10.3133/ofr558
UR  - https://pubs.usgs.gov/publication/ofr558
ID  - ofr558
ER  -