@misc{indiciae7ae8c032181a,
  title = {Coal test drilling for the San Juan mine extension, San Juan County, New Mexico},
  author = {Laura J. Beach and Russell W. Jentgen},
  year = {1978},
  doi = {10.3133/ofr78960},
  url = {https://pubs.usgs.gov/publication/ofr78960},
  note = {Source identifier: ofr78960}
}