@misc{indiciaeeb89a9ede846,
  title = {Geology and coal resources of the Stonewall-Tercio area, Las Animas County, Colorado},
  author = {Gordon H. Wood and R. B. Johnson and D. H. Eargle and R. T. Duffner and Harold Major},
  year = {1951},
  doi = {10.3133/coal4},
  url = {https://pubs.usgs.gov/publication/coal4},
  note = {Source identifier: coal4}
}