@misc{indiciae79881e3ffc8c,
  title = {Coal resources maps of the Grants 30' x 60' Quadrangle, west-central New Mexico},
  author = {Jean K. Dillinger},
  year = {1989},
  doi = {10.3133/coal118b},
  url = {https://pubs.usgs.gov/publication/coal118B},
  note = {Source identifier: coal118B}
}