@misc{indiciaefbe42622adf3,
  title = {Analytical and stratigraphic data on the upper phosphatic mudstone member of the Santa Margarita Formation at Newsome Canyon, southern Cuyama Valley, California},
  author = {Albert Eugene Roberts},
  year = {1979},
  doi = {10.3133/ofr791466},
  url = {https://pubs.usgs.gov/publication/ofr791466},
  note = {Source identifier: ofr791466}
}