@misc{indiciae518d1a92c000,
  title = {Appraisal of the water resources of the Big Sioux aquifer, Brookings, Deuel, and Hamlin counties, South Dakota},
  author = {Neil C. Koch},
  year = {1980},
  doi = {10.3133/wri80100},
  url = {https://pubs.usgs.gov/publication/wri80100},
  note = {Source identifier: wri80100}
}