@misc{indiciae5309bf49b64a,
  title = {Geology of some copper deposits in North Carolina, Virginia, and Alabama},
  author = {Gilbert H. Espenshade},
  year = {1963},
  doi = {10.3133/b1142i},
  url = {https://pubs.usgs.gov/publication/b1142I},
  note = {Source identifier: b1142I}
}