@misc{indiciae2292d27bb054,
  title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 2001},
  author = {Leel Knowles and Sandra L. Kinnaman},
  year = {2002},
  doi = {10.3133/ofr02182},
  url = {https://pubs.usgs.gov/publication/ofr02182},
  note = {Source identifier: ofr02182}
}