@misc{indiciaeb5cc13b92298,
  title = {U.S. Geological Survey program of research and resource assessment in uranium and thorium},
  author = {Charles D. Masters},
  year = {1978},
  doi = {10.3133/ofr78444},
  url = {https://pubs.usgs.gov/publication/ofr78444},
  note = {Source identifier: ofr78444}
}