@misc{indiciaec8c014f7dede,
  title = {Mine drainage and rock type influences on eastern Ohio stream water quality},
  author = {D.R. Helsel},
  year = {2007},
  doi = {10.1111/j.1752-1688.1983.tb05936.x},
  url = {https://pubs.usgs.gov/publication/70011306},
  note = {Source identifier: 70011306}
}