@misc{indiciae9a8b188affae,
  title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, May 1984},
  author = {George R. Schiner and Eugene C. Hayes},
  year = {1984},
  doi = {10.3133/ofr84801},
  url = {https://pubs.usgs.gov/publication/ofr84801},
  note = {Source identifier: ofr84801}
}