@misc{indiciaed9995f13ec09,
  title = {Coal resource occurrence and coal development potential maps of the Rangely quadrangle, Rio Blanco County, Colorado},
  author = {AAA Engineering and Drafting Inc.},
  year = {1980},
  doi = {10.3133/ofr791421},
  url = {https://pubs.usgs.gov/publication/ofr791421},
  note = {Source identifier: ofr791421}
}