@misc{indiciaeb308af5b5184,
  title = {Geologic map of the northeast part of the Spokane 2? quadrangle, Idaho and Montana},
  author = {Allan B. Griggs},
  year = {1968},
  doi = {10.3133/ofr68112},
  url = {https://pubs.usgs.gov/publication/ofr68112},
  note = {Source identifier: ofr68112}
}