@misc{indiciaea59c038932b2,
  title = {Federal coal resource occurrence and coal development potential maps of the Oak Spring 7 1/2-minute Quadrangle, McKinley County, New Mexico},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1985},
  doi = {10.3133/ofr8027},
  url = {https://pubs.usgs.gov/publication/ofr8027},
  note = {Source identifier: ofr8027}
}