@misc{indiciae2010cbd55082,
  title = {Geologic map and coal sections of the Point of Rocks quadrangle, Sweetwater County, Wyoming},
  author = {Dawn H. Madden},
  year = {1981},
  doi = {10.3133/ofr81869},
  url = {https://pubs.usgs.gov/publication/ofr81869},
  note = {Source identifier: ofr81869}
}