@misc{indiciae04c32a474142,
  title = {Catalog of soil-gas radon measurements in central California from May 1975 through December 1978},
  author = {William A. Gaman and Chi-Yu King},
  year = {1979},
  doi = {10.3133/ofr79547},
  url = {https://pubs.usgs.gov/publication/ofr79547},
  note = {Source identifier: ofr79547}
}