@misc{indiciae3199e4b34538,
  title = {Tin deposits of Durango, Mexico},
  author = {Ward C. Smith and Kenneth K. Segerstrom and Reinaldo Guiza},
  year = {1950},
  doi = {10.3133/b962d},
  url = {https://pubs.usgs.gov/publication/b962D},
  note = {Source identifier: b962D}
}