@misc{indiciae9b8e6d5088fa,
  title = {Hydrogeologic framework and ground-water flow in the Fall Zone of Virginia},
  author = {Randolph E. McFarland},
  year = {1999},
  doi = {10.3133/wri994093},
  url = {https://pubs.usgs.gov/publication/wri994093},
  note = {Source identifier: wri994093}
}