@misc{indiciae3a4a76b4027b,
  title = {Aeroradioactivity map of parts of Delaware and New Jersey},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/ofr791646},
  url = {https://pubs.usgs.gov/publication/ofr791646},
  note = {Source identifier: ofr791646}
}