@misc{indiciae3e15762599e5,
  title = {Notes to accompany preliminary geologic map of Fairfax, Virginia and (part) Seneca, Virginia-Maryland quadrangles},
  author = {Allan P. Bennison and Charles Milton},
  year = {1950},
  doi = {10.3133/ofr5011},
  url = {https://pubs.usgs.gov/publication/ofr5011},
  note = {Source identifier: ofr5011}
}