@misc{indiciae534cd1f9da61,
  title = {Recent mining developments in the Creede district, Colorado},
  author = {E. S. Larsen},
  year = {1930},
  doi = {10.3133/b811b},
  url = {https://pubs.usgs.gov/publication/b811B},
  note = {Source identifier: b811B}
}