@misc{indiciae6578d057d7bf,
  title = {Preliminary geologic map of Fairfax County, Virginia},
  author = {Avery Drake and A.E. Nelsen and L.M. Force and A.J. Froelich and P. T. Lyttle},
  year = {1979},
  doi = {10.3133/ofr79398},
  url = {https://pubs.usgs.gov/publication/ofr79398},
  note = {Source identifier: ofr79398}
}