@misc{indiciaee9a986a8f5a8,
  title = {Quality of surface waters of the United States, 1948, parts 1-6},
  author = {C. G. Paulsen},
  year = {1953},
  doi = {10.3133/wsp1132},
  url = {https://pubs.usgs.gov/publication/wsp1132},
  note = {Source identifier: wsp1132}
}