@misc{indiciae9dfd52b3e233,
  title = {Potentiometric surface of the upper Floridan aquifer, west-central Florida, May 1986},
  author = {G. L. Barr and B. R. Lewelling},
  year = {1986},
  doi = {10.3133/ofr86409w},
  url = {https://pubs.usgs.gov/publication/ofr86409W},
  note = {Source identifier: ofr86409W}
}