@misc{indiciaecc8058a8295a,
  title = {Reconnaissance of the geology and ground-water resources of southern Sioux County, Nebraska with a section on chemical quality of ground water},
  author = {Edward Bradley and Francis Hays Rainwater},
  year = {1956},
  doi = {10.3133/ha6},
  url = {https://pubs.usgs.gov/publication/ha6},
  note = {Source identifier: ha6}
}