@misc{indiciae277bbca03ad7,
  title = {Geologic map and coal sections of the Twentymile Butte Quadrangle, Campbell County, Wyoming},
  author = {B.F. Bohor and B.H. Kent and D.R. Haddock},
  year = {1979},
  doi = {10.3133/mf1073},
  url = {https://pubs.usgs.gov/publication/mf1073},
  note = {Source identifier: mf1073}
}