@misc{indiciaeb65b2ab227a6,
  title = {Potentiometric surface map of the Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 1980},
  author = {G. R. Schiner and E. C. Hayes},
  year = {1981},
  doi = {10.3133/ofr81136},
  url = {https://pubs.usgs.gov/publication/ofr81136},
  note = {Source identifier: ofr81136}
}