@misc{indiciae3bb76b91d028,
  title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, September 1992},
  author = {Louis C. Murray and R. M. Spechler and G. G. Phelps and L. A. Bradner},
  year = {1993},
  doi = {10.3133/ofr9350},
  url = {https://pubs.usgs.gov/publication/ofr9350},
  note = {Source identifier: ofr9350}
}