@misc{indiciaecb8094211256,
  title = {Geologic summary of the Central Valley of California, with reference to disposal of liquid radioactive waste},
  author = {C.A. Repenning},
  year = {1961},
  doi = {10.3133/ofr61127},
  url = {https://pubs.usgs.gov/publication/ofr61127},
  note = {Source identifier: ofr61127}
}