@misc{indiciaeb01b46a871a2,
  title = {Hydrogeology of the Pine Ridge Indian Reservation, South Dakota},
  author = {M. J. Ellis and D. G. Adolphson},
  year = {1971},
  doi = {10.3133/ha357},
  url = {https://pubs.usgs.gov/publication/ha357},
  note = {Source identifier: ha357}
}