@misc{indiciaebbc30826171a,
  title = {Paleogene biostratigraphy of nonmarine rocks in King County, Washington},
  author = {Jack A. Wolfe},
  year = {1968},
  doi = {10.3133/pp571},
  url = {https://pubs.usgs.gov/publication/pp571},
  note = {Source identifier: pp571}
}