@misc{indiciaebc8125eeda43,
  title = {Occurrence of Uranium and 222Radon in Glacial and Bedrock Aquifers in the Northern United States, 1993-2003},
  author = {Joseph D. Ayotte and Sarah M. Flanagan and William S. Morrow},
  year = {2007},
  doi = {10.3133/sir20075037},
  url = {https://pubs.usgs.gov/publication/sir20075037},
  note = {Source identifier: sir20075037}
}