@misc{indiciae83d0ebc1cf03,
  title = {Selected stratigraphic sections of Cambrian and Ordovician rocks in Arizona, New Mexico, and western Texas},
  author = {Philip Thayer Hayes},
  year = {1975},
  doi = {10.3133/ofr75178},
  url = {https://pubs.usgs.gov/publication/ofr75178},
  note = {Source identifier: ofr75178}
}