@misc{indiciae1c9c0b7ddd40,
  title = {Surface water supply of the United States, 1958, Part 7, lower Mississippi River Basin},
  author = {J. V. B. Wells},
  year = {1960},
  doi = {10.3133/wsp1561},
  url = {https://pubs.usgs.gov/publication/wsp1561},
  note = {Source identifier: wsp1561}
}