@misc{indiciae1e5876911b4e,
  title = {Geologic map of the Valentines 7.5-minute Quadrangle, Brunswick and Greensville counties, Virginia, and Northhampton and Halifax counties, North Carolina},
  author = {P. E. Sacks},
  year = {1996},
  doi = {10.3133/mf2288},
  url = {https://pubs.usgs.gov/publication/mf2288},
  note = {Source identifier: mf2288}
}