@misc{indiciaeafc2088cdc03,
  title = {Mineral deposits and occurrences of the Bolivian Altiplano and Cordillera Occidental},
  author = {U.S. Geological Survey and Servicio Geologico de Bolivia},
  year = {1991},
  doi = {10.3133/ofr91286},
  url = {https://pubs.usgs.gov/publication/ofr91286},
  note = {Source identifier: ofr91286}
}