@misc{indiciae78fc7fa9efd8,
  title = {Geologic map of the central part of the San Francisco Volcanic Field, north-central Arizona},
  author = {Edward W. Wolfe and George E. Ulrich and Richard F. Holm and Richard B. Moore and Christopher G. Newhall},
  year = {1987},
  doi = {10.3133/mf1959},
  url = {https://pubs.usgs.gov/publication/mf1959},
  note = {Source identifier: mf1959}
}