@misc{indiciaeb92251e6cd24,
  title = {Geologic map of the northwest part of the San Francisco Volcanic Field, north-central Arizona},
  author = {E.W. Wolfe and C. G. Newhall and G. E. Ulrich},
  year = {1987},
  doi = {10.3133/mf1957},
  url = {https://pubs.usgs.gov/publication/mf1957},
  note = {Source identifier: mf1957}
}