@misc{indiciae67636685a51d,
  title = {Tertiary geology and oil-shale resources of the Piceance Creek basin between the Colorado and White Rivers, northwestern Colorado},
  author = {John R. Donnell},
  year = {1961},
  doi = {10.3133/b1082l},
  url = {https://pubs.usgs.gov/publication/b1082L},
  note = {Source identifier: b1082L}
}