@misc{indiciae18a411a8408a,
  title = {Coal resource occurrence map of the Crownpoint quadrangle, McKinley County, New Mexico},
  author = {Berge Exploration Inc.},
  year = {1979},
  doi = {10.3133/ofr791125},
  url = {https://pubs.usgs.gov/publication/ofr791125},
  note = {Source identifier: ofr791125}
}