@misc{indiciae26a82513f3fe,
  title = {Geologic radon potential of EPA Region 4; Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee},
  year = {1993},
  doi = {10.3133/ofr93292d},
  url = {https://pubs.usgs.gov/publication/ofr93292D},
  note = {Source identifier: ofr93292D}
}