@misc{indiciae60659a53f3d1,
  title = {Surface water supply of the United States, 1961-65: Part 5, Hudson Bay and Upper Mississippi River basins: Volume 1. Hudson Bay basin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1971},
  doi = {10.3133/wsp1913},
  url = {https://pubs.usgs.gov/publication/wsp1913},
  note = {Source identifier: wsp1913}
}