@misc{indiciae0693aabda32e,
  title = {Potentiometric surface of the upper Floridan aquifer, west-central Florida, September 1990},
  author = {R. A. Mularoni and Lari A. Knochenmus},
  year = {1991},
  doi = {10.3133/ofr9190},
  url = {https://pubs.usgs.gov/publication/ofr9190},
  note = {Source identifier: ofr9190}
}