@misc{indiciae529beac327fa,
  title = {Quality of surface waters of the United States, 1959, Parts 5 \& 6, Hudson Bay and upper Mississippi River basins and Missouri River basin},
  author = {S. K. Love},
  year = {1963},
  doi = {10.3133/wsp1643},
  url = {https://pubs.usgs.gov/publication/wsp1643},
  note = {Source identifier: wsp1643}
}