@misc{indiciae0a4e36dcb085,
  title = {Map showing precious metal deposits of South America},
  author = {G. H. Goudarzi},
  year = {1977},
  doi = {10.3133/mf868g},
  url = {https://pubs.usgs.gov/publication/mf868G},
  note = {Source identifier: mf868G}
}