@misc{indiciaec897f5790678,
  title = {Geologic map of the Benson quadrangle, Cochise and Pima Counties, Arizona},
  author = {S. C. Creasy},
  year = {1967},
  doi = {10.3133/i470},
  url = {https://pubs.usgs.gov/publication/i470},
  note = {Source identifier: i470}
}