@misc{indiciae2b9ff0722fc2,
  title = {Uranium-bearing coal in the central part of the Great Divide Basin},
  author = {G. N. Pipiringos},
  year = {1961},
  doi = {10.3133/b1099a},
  url = {https://pubs.usgs.gov/publication/b1099A},
  note = {Source identifier: b1099A}
}