@misc{indiciae7dec11c7bf38,
  title = {Reconnaissance geologic map of the Clarksville North and Boydton 7.5-minute quadrangles, Mecklenburg and Charlotte counties, Virginia},
  author = {J. D. Peper and A.W. Wygant},
  year = {1997},
  doi = {10.3133/ofr97524},
  url = {https://pubs.usgs.gov/publication/ofr97524},
  note = {Source identifier: ofr97524}
}