@misc{indiciaee602f14a90e1,
  title = {Quality of surface waters of the United States, 1968, Part 3, Ohio River basin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/wsp2093},
  url = {https://pubs.usgs.gov/publication/wsp2093},
  note = {Source identifier: wsp2093}
}