@misc{indiciae27d000d72b01,
  title = {Geology of tungsten deposits in north-central Chile},
  author = {James Franklin McAllister and Carlos F. Ruiz},
  year = {1948},
  doi = {10.3133/b960c},
  url = {https://pubs.usgs.gov/publication/b960C},
  note = {Source identifier: b960C}
}