Preliminary geologic map of the east-central part of the Minnekahta quadrangle, Fall River County, South Dakota

@inproceedings{Wilmarth1957PreliminaryGM,
  title={Preliminary geologic map of the east-central part of the Minnekahta quadrangle, Fall River County, South Dakota},
  author={Verl Richard Wilmarth and Ross D. Smith},
  year={1957}
}