@misc{indiciaee5aa7e005b9d,
  title = {Geology and water resources of a portion of southeastern South Dakota},
  author = {James Edward Todd},
  year = {1900},
  doi = {10.3133/wsp34},
  url = {https://pubs.usgs.gov/publication/wsp34},
  note = {Source identifier: wsp34}
}