@misc{indiciaefc6ab41e7f3d,
  title = {Geologic map of the Buckeystown quadrangle, Frederick and Montgomery Counties, Maryland, and Loudoun County, Virginia},
  author = {Scott Southworth and David K. Brezinski},
  year = {2003},
  doi = {10.3133/gq1800},
  url = {https://pubs.usgs.gov/publication/gq1800},
  note = {Source identifier: gq1800}
}