@misc{indiciaebb714bce8f7f,
  title = {A description of colored gravity and terrain maps of the southwestern Cordillera},
  author = {R. W. Saltus},
  year = {1984},
  doi = {10.3133/ofr8495},
  url = {https://pubs.usgs.gov/publication/ofr8495},
  note = {Source identifier: ofr8495}
}