@misc{indiciaec5fd33f21b64,
  title = {Geological studies of the Charleston, South Carolina, area; thickness of overburden map},
  author = {L.M. Force},
  year = {1978},
  doi = {10.3133/mf1021b},
  url = {https://pubs.usgs.gov/publication/mf1021B},
  note = {Source identifier: mf1021B}
}