@misc{indiciaea62fd07eec16,
  title = {Quality of surface waters of the United States, 1960 parts 3 and 4, Ohio River Basin and St. Lawrence River basin},
  author = {S. K. Love},
  year = {1968},
  doi = {10.3133/wsp1742},
  url = {https://pubs.usgs.gov/publication/wsp1742},
  note = {Source identifier: wsp1742}
}