@misc{indiciae89b147e463ad,
  title = {Chloride and total hardness concentrations of water from the upper part of the Floridan Aquifer in St. Johns County, Florida},
  author = {Paul S. Hampson and Eugene C. Hayes},
  year = {1982},
  doi = {10.3133/ofr81907},
  url = {https://pubs.usgs.gov/publication/ofr81907},
  note = {Source identifier: ofr81907}
}