@misc{indiciae4ffc529ccf9d,
  title = {Sediment distribution and hydrologic conditions of the Potomac aquifer in Virginia and parts of Maryland and North Carolina},
  author = {Randolph E. McFarland},
  year = {2013},
  doi = {10.3133/sir20135116},
  url = {https://pubs.usgs.gov/publication/sir20135116},
  note = {Source identifier: sir20135116}
}