@misc{indiciae01f8b3c9a06b,
  title = {Acid rain in Shenandoah National Park, Virginia},
  author = {Karen C. Rice and Frank A. Deviney and Gordon Olson},
  year = {2007},
  doi = {10.3133/fs20073057},
  url = {https://pubs.usgs.gov/publication/fs20073057},
  note = {Source identifier: fs20073057}
}