@misc{indiciaef31e11f3b803,
  title = {Water-quality trends for a stream draining the Southern Anthracite Field, Pennsylvania},
  author = {C.A. Cravotta and Michael D. Bilger},
  year = {2022},
  doi = {10.1144/geochem.1.1.33},
  url = {https://pubs.usgs.gov/publication/70023550},
  note = {Source identifier: 70023550}
}