@misc{indiciaefe1c977eb04b,
  title = {Geologic map of the Stephens City quadrangle, Clark, Frederick, and Warren Counties, Virginia},
  author = {D. J. Weary and R. C. Orndorff and W. Aleman-Gonzalez},
  year = {2006},
  doi = {10.3133/ofr20061173},
  url = {https://pubs.usgs.gov/publication/ofr20061173},
  note = {Source identifier: ofr20061173}
}