@misc{indiciae45859999991d,
  title = {A mineralogical study of the Guanajuato, Mexico, silver ores},
  author = {Ivan Franklin Wilson and Charles Milton and Joseph Rollins Houston},
  year = {1975},
  doi = {10.3133/ofr7570},
  url = {https://pubs.usgs.gov/publication/ofr7570},
  note = {Source identifier: ofr7570}
}