@misc{indiciae04291a7aaa19,
  title = {Spatial digital database of the geologic map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona},
  author = {William R. Dickinson and Douglas M. Hirschberg and G. Stephen Pitts and Karen S. Bolm},
  year = {2002},
  doi = {10.3133/ofr02365},
  url = {https://pubs.usgs.gov/publication/ofr02365},
  note = {Source identifier: ofr02365}
}