@misc{indiciae07651e9586ce,
  title = {Sulfate from severe acid rain due to anthracite coal burning still evident in rivers one century later},
  author = {Ward E. Sanford},
  year = {2025},
  doi = {10.1016/j.scitotenv.2025.179672},
  url = {https://pubs.usgs.gov/publication/70283100},
  note = {Source identifier: 70283100}
}