@misc{indiciae4b78cd46545e,
  title = {Principal sources of ground water in Fairfax County, Virginia},
  author = {Richard H. Johnston and J. D. Larson},
  year = {1979},
  doi = {10.3133/ofr79211},
  url = {https://pubs.usgs.gov/publication/ofr79211},
  note = {Source identifier: ofr79211}
}