@misc{indiciae6898b123cec4,
  title = {Thorium and rare earth minerals in the Powderhorn district, Gunnison County, Colorado},
  author = {Jerry C. Olson and Stewart R. Wallace},
  year = {1954},
  doi = {10.3133/tei353},
  url = {https://pubs.usgs.gov/publication/tei353},
  note = {Source identifier: tei353}
}