@misc{indiciae44e6819bd4b1,
  title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 1986},
  author = {R. M. Spechler},
  year = {1987},
  doi = {10.3133/ofr8736},
  url = {https://pubs.usgs.gov/publication/ofr8736},
  note = {Source identifier: ofr8736}
}