@misc{indiciae2e8967f63193,
  title = {Pliocene diatoms from the Kettleman Hills, California},
  author = {K. E. Lohman},
  year = {1938},
  doi = {10.3133/pp189c},
  url = {https://pubs.usgs.gov/publication/pp189C},
  note = {Source identifier: pp189C}
}