@misc{indiciaefcd8adef6107,
  title = {Geologic map of the Duty quadrangle, Dickenson, Russell, and Buchanan Counties, Virginia},
  author = {Charles R. Meissner},
  year = {1978},
  doi = {10.3133/gq1458},
  url = {https://pubs.usgs.gov/publication/gq1458},
  note = {Source identifier: gq1458}
}