@misc{indiciaecfe06ca06a5b,
  title = {Tin deposits of the Black Range, Catron and Sierra Counties, New Mexico: A preliminary report},
  author = {Carl Fries},
  year = {1940},
  doi = {10.3133/b922m},
  url = {https://pubs.usgs.gov/publication/b922M},
  note = {Source identifier: b922M}
}