@misc{indiciaeafaaf16ca67d,
  title = {Radioactivity in the environment; a case study of the Puerco and Little Colorado River basins, Arizona and New Mexico},
  author = {Laurie Wirt},
  year = {1994},
  doi = {10.3133/wri944192},
  url = {https://pubs.usgs.gov/publication/wri944192},
  note = {Source identifier: wri944192}
}