@misc{indiciae8812ac3a6fae,
  title = {Reconnaissance geologic map of the west half of the Spokane quadrangle, Washington and Idaho},
  author = {A. B. Griggs},
  year = {1966},
  doi = {10.3133/i464},
  url = {https://pubs.usgs.gov/publication/i464},
  note = {Source identifier: i464}
}