@misc{indiciae8526de4aced3,
  title = {Geology of the Bernal-Jalpan area, Estado de Queretaro, Mexico},
  author = {Kenneth K. Segerstrom},
  year = {1961},
  doi = {10.3133/b1104b},
  url = {https://pubs.usgs.gov/publication/b1104B},
  note = {Source identifier: b1104B}
}