@misc{indiciae665c514e1538,
  title = {Water-level map of the Mississippi delta alluvium in northwestern Mississippi, April 1981},
  author = {Daphne Darden},
  year = {1981},
  doi = {10.3133/ofr811123},
  url = {https://pubs.usgs.gov/publication/ofr811123},
  note = {Source identifier: ofr811123}
}