@misc{indiciae90fd1a9fac43,
  title = {Digital map of major bedrock lithologic units for the Pacific Northwest: A contribution to the Interior Columbia River Basin Ecosystem Management Project},
  author = {Bruce R. Johnson and Gary L. Raines},
  year = {1995},
  doi = {10.3133/ofr95680},
  url = {https://pubs.usgs.gov/publication/ofr95680},
  note = {Source identifier: ofr95680}
}