@misc{indiciae34c86139331b,
  title = {U.S. Geological Survey ground-water studies in South Dakota},
  author = {N.C. Koch},
  year = {1988},
  doi = {10.3133/ofr88125},
  url = {https://pubs.usgs.gov/publication/ofr88125},
  note = {Source identifier: ofr88125}
}