@misc{indiciae36971eff7bc9,
  title = {Preliminary geologic map of the Socorro 1 degree by 2 degrees Quadrangle, central New Mexico},
  author = {Michael N. Machette},
  year = {1978},
  doi = {10.3133/ofr78607},
  url = {https://pubs.usgs.gov/publication/ofr78607},
  note = {Source identifier: ofr78607}
}