@misc{indiciae7ee9d5b9dd7e,
  title = {Reconnaissance of radioactive rocks of Maine},
  author = {John M. Nelson and Perry F. Narten},
  year = {1951},
  doi = {10.3133/tei68},
  url = {https://pubs.usgs.gov/publication/tei68},
  note = {Source identifier: tei68}
}