@misc{indiciaed370320da561,
  title = {Geology and mineral resources of the Altiplano and Cordillera Occidental, Bolivia},
  author = {Servicio Geologico de Bolivia},
  year = {1992},
  doi = {10.3133/b1975},
  url = {https://pubs.usgs.gov/publication/b1975},
  note = {Source identifier: b1975}
}