@misc{indiciae583446a3e39e,
  title = {Preliminary geologic map of the Elk Mountain Quadrangle, Cowlitz County, Washington},
  author = {Russell C. Evarts and Roger P. Ashley},
  year = {1992},
  doi = {10.3133/ofr92362},
  url = {https://pubs.usgs.gov/publication/ofr92362},
  note = {Source identifier: ofr92362}
}