@misc{indiciae7efb9fe83803,
  title = {The structural geology of Giles County, Virginia: a preliminary reinterpretation},
  author = {William J. Perry},
  year = {1977},
  doi = {10.3133/ofr77831},
  url = {https://pubs.usgs.gov/publication/ofr77831},
  note = {Source identifier: ofr77831}
}