@misc{indiciae2a2f8658c2c7,
  title = {Geology of the Cascade Springs quadrangle, Fall River County, South Dakota},
  author = {Edwin Van Horn Post},
  year = {1967},
  doi = {10.3133/b1063l},
  url = {https://pubs.usgs.gov/publication/b1063L},
  note = {Source identifier: b1063L}
}