@misc{indiciae0d746875fc50,
  title = {Potentiometric surface of the Floridan Aquifer, St. Johns River Water Management District and vicinity, Florida, May 1981},
  author = {George R. Schiner and Eugene C. Hayes},
  year = {1981},
  doi = {10.3133/ofr811052},
  url = {https://pubs.usgs.gov/publication/ofr811052},
  note = {Source identifier: ofr811052}
}