@misc{indiciae0e68ae01b3df,
  title = {Geology of the lower Gila region, Arizona},
  author = {C. P. Ross},
  year = {1922},
  doi = {10.3133/pp129h},
  url = {https://pubs.usgs.gov/publication/pp129H},
  note = {Source identifier: pp129H}
}