@misc{indiciaef14c13cd9776,
  title = {Historic geomorphology of the San Pedro River: archival and physical evidence},
  author = {R. Hereford and Julio L. Betancourt},
  year = {2009},
  url = {https://pubs.usgs.gov/publication/70159029},
  note = {Source identifier: 70159029}
}