@misc{indiciae1c37c72f9290,
  title = {Mapping the radon potential of the united states: Examples from the Appalachians},
  author = {L.C.S. Gundersen and R.R. Schumann},
  year = {1997},
  doi = {10.1016/s0160-4120(96)00190-0},
  url = {https://pubs.usgs.gov/publication/70020149},
  note = {Source identifier: 70020149}
}