@misc{indiciae0d4499f5caa3,
  title = {Geologic map of the Winchester quadrangle, Frederick County, Virginia},
  author = {Randall C. Orndorff and David J. Weary and Ronald A. Parker},
  year = {2003},
  doi = {10.3133/ofr03461},
  url = {https://pubs.usgs.gov/publication/ofr03461},
  note = {Source identifier: ofr03461}
}