@misc{indiciaef729b30e5bce,
  title = {Radon-222 occurrence in ground water in New Jersey, with emphasis on the Highlands Province},
  author = {Zoltan Szabo and Vincent T. DePaul},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/70206076},
  note = {Source identifier: 70206076}
}