@misc{indiciaebc9d6f7b6de1,
  title = {Geologic map of the Camas Quadrangle, Clark County, Washington, and Multnomah County, Oregon},
  author = {Russell C. Evarts and Jim E. O'Connor},
  year = {2008},
  doi = {10.3133/sim3017},
  url = {https://pubs.usgs.gov/publication/sim3017},
  note = {Source identifier: sim3017}
}