@misc{indiciaed0783165a638,
  title = {Map showing copper deposits of South America},
  author = {G. H. Goudarzi},
  year = {1977},
  doi = {10.3133/mf868f},
  url = {https://pubs.usgs.gov/publication/mf868F},
  note = {Source identifier: mf868F}
}