@misc{indiciae25f07d814354,
  title = {Cenozoic rocks of the Santa Rita Mountains, southeast of Tucson, Arizona},
  author = {Harald Drewes},
  year = {1972},
  doi = {10.3133/pp746},
  url = {https://pubs.usgs.gov/publication/pp746},
  note = {Source identifier: pp746}
}