@misc{indiciae043b7031afa1,
  title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, May 2001},
  author = {Leel Knowles},
  year = {2001},
  doi = {10.3133/ofr01313},
  url = {https://pubs.usgs.gov/publication/ofr01313},
  note = {Source identifier: ofr01313}
}