@misc{indiciaeafdaa01a2346,
  title = {Relations among sulfate, metals, sediment, and streamflow data for a stream draining a coal-mined watershed in East-Central Pennsylvania},
  author = {Charles A. Cravotta},
  year = {2000},
  url = {https://pubs.usgs.gov/publication/70189394},
  note = {Source identifier: 70189394}
}