@misc{indiciae15dfbe9c4da2,
  title = {The Gulf Series in the subsurface in northern Florida and southern Georgia},
  author = {P.L. Applin and E.R. Applin},
  year = {1967},
  doi = {10.3133/pp524g},
  url = {https://pubs.usgs.gov/publication/pp524G},
  note = {Source identifier: pp524G}
}