@misc{indiciae9dfaec31beef,
  title = {Geology and ground-water resources of the Fairfax quadrangle, Virginia},
  author = {Paul McKelvey Johnston},
  year = {1963},
  doi = {10.3133/wsp1539l},
  url = {https://pubs.usgs.gov/publication/wsp1539L},
  note = {Source identifier: wsp1539L}
}