@misc{indiciae7e1bac331f3f,
  title = {Geologic map of the southwest part of the San Francisco volcanic field, north-central Arizona},
  author = {C. G. Newhall and G. E. Ulrich and E.W. Wolfe},
  year = {1987},
  doi = {10.3133/mf1958},
  url = {https://pubs.usgs.gov/publication/mf1958},
  note = {Source identifier: mf1958}
}