@misc{indiciaec3206f271ae5,
  title = {Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system in Florida and parts of Georgia, Alabama, and South Carolina},
  author = {Lester J. Williams and Joann F. Dixon},
  year = {2015},
  doi = {10.3133/ds926},
  url = {https://pubs.usgs.gov/publication/ds926},
  note = {Source identifier: ds926}
}