@misc{indiciae4ff6cc0444c5,
  title = {Digital geologic map of the Harpers Ferry National Historical Park},
  author = {Scott Southworth and D. K. Brezinski and Randall C. Orndorff and Kerry M. Lagueux and Peter G. Chirico},
  year = {2000},
  doi = {10.3133/ofr00297},
  url = {https://pubs.usgs.gov/publication/ofr00297},
  note = {Source identifier: ofr00297}
}