@misc{indiciaeae124e5b2362,
  title = {Uranium-series dates on oyster shells from marine terraces of San Pablo Bay, California},
  author = {E. J. Helley and J.A. Fitzpatrick and J. L. Bischoff},
  year = {1993},
  doi = {10.3133/ofr93286},
  url = {https://pubs.usgs.gov/publication/ofr93286},
  note = {Source identifier: ofr93286}
}