@misc{indiciae5a1cb2a58515,
  title = {Preliminary compilation of isotopic ages within the Ajo 1° x 2° quadrangle, Arizona},
  author = {Richard M. Tosdal},
  year = {1979},
  doi = {10.3133/ofr79399},
  url = {https://pubs.usgs.gov/publication/ofr79399},
  note = {Source identifier: ofr79399}
}