@misc{indiciae7a568938de1a,
  title = {Reconnaissance for radioactive materials in the southern part of Brazil},
  author = {Charles T. Pierson and Donald D. Haynes and Evaristo Ribeiro Filho},
  year = {1957},
  doi = {10.3133/tem1098},
  url = {https://pubs.usgs.gov/publication/tem1098},
  note = {Source identifier: tem1098}
}