@misc{indiciaec6f435e4a213,
  title = {Potentiometric surface of the upper Floridan aquifer in central Sumter County, Florida, September 1986},
  author = {L. A. Bradner},
  year = {1987},
  doi = {10.3133/ofr8734},
  url = {https://pubs.usgs.gov/publication/ofr8734},
  note = {Source identifier: ofr8734}
}