@misc{indiciaefe9517a794ec,
  title = {Geologic map of the Madrid Quadrangle, Santa Fe and Sandoval counties, New Mexico},
  author = {G.O. Bachman},
  year = {1974},
  doi = {10.3133/ofr74175},
  url = {https://pubs.usgs.gov/publication/ofr74175},
  note = {Source identifier: ofr74175}
}