@misc{indiciaefa0fbc757331,
  title = {Analysis of water quality of the Mahoning River in Ohio},
  author = {Gene A. Bednar and Charles R. Collier and William Perry Cross},
  year = {1968},
  doi = {10.3133/wsp1859c},
  url = {https://pubs.usgs.gov/publication/wsp1859C},
  note = {Source identifier: wsp1859C}
}