@misc{indiciae2af9ee4a1f08,
  title = {Quality of surface waters of the United States, 1970, Parts 4 and 5, St. Lawrence River basin, and Hudson Bay and Upper Mississippi River basins},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1975},
  doi = {10.3133/wsp2154},
  url = {https://pubs.usgs.gov/publication/wsp2154},
  note = {Source identifier: wsp2154}
}