@misc{indiciaecd04c60abf03,
  title = {Content of adsorbed methane in coal from four core holes in the Raton and Vermejo formations, Las Animas County, Colorado},
  author = {Walter Danilchik and Janet E. Schultz and Carol Morgans Tremain},
  year = {1979},
  doi = {10.3133/ofr79762},
  url = {https://pubs.usgs.gov/publication/ofr79762},
  note = {Source identifier: ofr79762}
}