@misc{indiciae1bfd28bae81c,
  title = {Preliminary geologic map of the coastal plain in Fairfax County, Virginia},
  author = {Lucy M. Force},
  year = {1975},
  doi = {10.3133/ofr75415},
  url = {https://pubs.usgs.gov/publication/ofr75415},
  note = {Source identifier: ofr75415}
}