@misc{indiciae6dfa66d3b6bd,
  title = {Some aspects of younger Precambrian geology in southern Arizona},
  author = {Andrew Fletcher Shride},
  year = {1961},
  doi = {10.3133/ofr61155},
  url = {https://pubs.usgs.gov/publication/ofr61155},
  note = {Source identifier: ofr61155}
}