@misc{indiciae8ca7b6f25bea,
  title = {Geologic map of the Amboy Quadrangle, Clark and Cowlitz counties, Washington},
  author = {R.C. Evarts},
  year = {2005},
  doi = {10.3133/sim2885},
  url = {https://pubs.usgs.gov/publication/sim2885},
  note = {Source identifier: sim2885}
}