@misc{indiciae2c3047aa74a0,
  title = {Documentation of geographic-information-system coverages and data-input files used for analysis of the geohydrology of the Virginia Coastal Plain},
  author = {M. J. Focazio and T. B. Samsel},
  year = {1993},
  doi = {10.3133/wri934015},
  url = {https://pubs.usgs.gov/publication/wri934015},
  note = {Source identifier: wri934015}
}