@misc{indiciae85ebc1432404,
  title = {Geologic map of the Safford Quadrangle, Graham County, Arizona},
  author = {B. B. Houser and D.H. Richter and M. Shafiqullah},
  year = {1985},
  doi = {10.3133/i1617},
  url = {https://pubs.usgs.gov/publication/i1617},
  note = {Source identifier: i1617}
}