@misc{indiciaef70c618ad515,
  title = {Coal resource occurrence map of the San Pablo quadrangle, Sandoval County, New Mexico},
  author = {Berge Exploration Inc.},
  year = {1979},
  doi = {10.3133/ofr79624},
  url = {https://pubs.usgs.gov/publication/ofr79624},
  note = {Source identifier: ofr79624}
}