@misc{indiciae5788ecb8bf5c,
  title = {Preliminary geologic map and coal resources of the Ranchester Quadrangle, Sheridan County, Wyoming, and Big Horn County, Montana},
  author = {B. E. Barnum},
  year = {1974},
  doi = {10.3133/ofr7435},
  url = {https://pubs.usgs.gov/publication/ofr7435},
  note = {Source identifier: ofr7435}
}