@misc{indiciae46559c9a0d43,
  title = {Preliminary Geologic map of the Cougar quadrangle, Cowlitz and Clark counties, Washington},
  author = {R.C. Evarts and R. P. Ashley},
  year = {1990},
  doi = {10.3133/ofr90631},
  url = {https://pubs.usgs.gov/publication/ofr90631},
  note = {Source identifier: ofr90631}
}