@misc{indiciae6381394f88d7,
  title = {USGS Tracks Acid Rain},
  author = {John D. Gordon and Mark A. Nilles and LeRoy J. Schroder},
  year = {1995},
  doi = {10.3133/fs18395},
  url = {https://pubs.usgs.gov/publication/fs18395},
  note = {Source identifier: fs18395}
}