@misc{indiciae61703bc06e06,
  title = {Ore deposits of the Sierrita Mountains, Pima County, Arizona},
  author = {Frederick Leslie Ransome},
  year = {1922},
  doi = {10.3133/b725j},
  url = {https://pubs.usgs.gov/publication/b725J},
  note = {Source identifier: b725J}
}