@misc{indiciae5a43a6aa91c2,
  title = {Geologic map of the west half of the Winston-Salem Quadrangle, North Carolina, Virginia, and Tennessee},
  author = {D.W. Rankin and G.H. Espenshade and R. B. Neuman},
  year = {1972},
  doi = {10.3133/i709a},
  url = {https://pubs.usgs.gov/publication/i709A},
  note = {Source identifier: i709A}
}