@misc{indiciaef671149ce841,
  title = {Geology of northwestern Oregon west of Willamette River and north of latitude 45 degrees 15 minutes},
  author = {Walter Cyrus Warren and R.M. Grivetti and Hans Norbisrath},
  year = {1945},
  doi = {10.3133/om42},
  url = {https://pubs.usgs.gov/publication/om42},
  note = {Source identifier: om42}
}