@misc{indiciaec9238338b499,
  title = {Geology and resources of thorium and associated elements in the Wet Mountains area, Fremont and Custer counties, Colorado},
  author = {T.J. Armbrustmacher},
  year = {1988},
  doi = {10.3133/pp1049f},
  url = {https://pubs.usgs.gov/publication/pp1049F},
  note = {Source identifier: pp1049F}
}