@misc{indiciaed0550b64dde8,
  title = {Cenozoic stratigraphy and geologic history of the Tucson Basin, Pima County, Arizona},
  author = {S. R. Anderson},
  year = {1987},
  doi = {10.3133/wri874190},
  url = {https://pubs.usgs.gov/publication/wri874190},
  note = {Source identifier: wri874190}
}