@misc{indiciaeb4c708dbcd37,
  title = {Relationships between geology, equivalent uranium concentration, and radon in soil gas, Fairfax County, Virginia},
  author = {R.R. Schumann and D.E. Owen},
  year = {1988},
  doi = {10.3133/ofr8818},
  url = {https://pubs.usgs.gov/publication/ofr8818},
  note = {Source identifier: ofr8818}
}