@misc{indiciaebd5ff8c40cca,
  title = {Paleontologic data on the age of the Orca Group, Alaska},
  author = {George Plafker and Gerta Keller and J.A. Barron and J. R. Blueford},
  year = {1985},
  doi = {10.3133/ofr85429},
  url = {https://pubs.usgs.gov/publication/ofr85429},
  note = {Source identifier: ofr85429}
}