@misc{indiciae0ac927795da1,
  title = {Quality of surface waters of the United States, 1945},
  author = {C. G. Paulsen},
  year = {1949},
  doi = {10.3133/wsp1030},
  url = {https://pubs.usgs.gov/publication/wsp1030},
  note = {Source identifier: wsp1030}
}