@misc{indiciaeeaa305dcbb40,
  title = {Maps showing geologic and hydrologic factors affecting land-use planning in the Culpeper Basin, Virginia and Maryland},
  author = {A.J. Froelich},
  year = {1989},
  doi = {10.3133/i1313j},
  url = {https://pubs.usgs.gov/publication/i1313J},
  note = {Source identifier: i1313J}
}