@misc{indiciae32c14713675b,
  title = {Surface water supply of the United States, 1961-65, Part 7. Lower Mississippi River basin, Volume 1. Lower Mississippi River basin except Arkansas River basin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/wsp1920},
  url = {https://pubs.usgs.gov/publication/wsp1920},
  note = {Source identifier: wsp1920}
}