@misc{indiciae699ac6698f6c,
  title = {Geology of the Plumtree area, Spruce Pine district, North Carolina},
  author = {Donald Albert Brobst},
  year = {1953},
  doi = {10.3133/ofr5326},
  url = {https://pubs.usgs.gov/publication/ofr5326},
  note = {Source identifier: ofr5326}
}