@misc{indiciaea5cf0bbe9668,
  title = {Road reconnaissance of anomalous radioactivity in the early Proterozoic Roraima Group near Santa Elena de Uairen, Estado Bolivar, Venezuela},
  author = {William E. Brooks and Fernando Nunez},
  year = {1991},
  doi = {10.3133/ofr91632},
  url = {https://pubs.usgs.gov/publication/ofr91632},
  note = {Source identifier: ofr91632}
}