@misc{indiciae3c6d35053db5,
  title = {Geologic field trip guide for the Cenozoic stratigraphy and late Eocene paleoecology of southwestern Washington},
  author = {J.M. Armentrout and Kristin McDougall and P.T. Jefferis and Elizabeth Nesbitt},
  year = {1980},
  url = {https://pubs.usgs.gov/publication/70047780},
  note = {Source identifier: 70047780}
}