@misc{indiciae285de538df9b,
  title = {Reconnaissance of mine drainage in the coal fields of eastern Pennsylvania},
  author = {D.J. Growitz and L.A. Reed and M.M. Beard},
  year = {1985},
  doi = {10.3133/wri834274},
  url = {https://pubs.usgs.gov/publication/wri834274},
  note = {Source identifier: wri834274}
}