@misc{indiciae24cb27218b4e,
  title = {Water-quality characteristics in the Black Hills area, South Dakota},
  author = {Joyce E. Williamson and Janet M. Carter},
  year = {2001},
  doi = {10.3133/wri20014194},
  url = {https://pubs.usgs.gov/publication/wri20014194},
  note = {Source identifier: wri20014194}
}