@misc{indiciaee1117f9fb292,
  title = {Map of metallic mining districts and mineral deposit types in Chihuahua, Mexico},
  author = {John-Mark Staude},
  year = {1993},
  doi = {10.3133/ofr93718},
  url = {https://pubs.usgs.gov/publication/ofr93718},
  note = {Source identifier: ofr93718}
}