@misc{indiciaebec291ac158f,
  title = {Geologic map of the northern part of the Rectortown Quadrangle, Virginia},
  author = {G. W. Leo},
  year = {1990},
  doi = {10.3133/ofr90639},
  url = {https://pubs.usgs.gov/publication/ofr90639},
  note = {Source identifier: ofr90639}
}