@misc{indiciae5369e6549905,
  title = {Summary of Surface Water Quality Data, Eastern Coal Province, October, 1978 to September, 1982},
  author = {K. L. Wetzel and S. A. Hoffman},
  year = {1983},
  doi = {10.3133/ofr83940},
  url = {https://pubs.usgs.gov/publication/ofr83940},
  note = {Source identifier: ofr83940}
}