@misc{indiciaeff9b68002bc7,
  title = {Quality of streams in the Bull Mountains region, south-central Montana},
  author = {J. R. Knapton},
  year = {1982},
  doi = {10.3133/wri822},
  url = {https://pubs.usgs.gov/publication/wri822},
  note = {Source identifier: wri822}
}