@misc{indiciaec981b3e17389,
  title = {Radium-226 and radium-228 in shallow ground water, southern New Jersey},
  author = {Zoltan Szabo and Vincent T. dePaul},
  year = {1998},
  doi = {10.3133/fs06298},
  url = {https://pubs.usgs.gov/publication/fs06298},
  note = {Source identifier: fs06298}
}