@misc{indiciaeacefb42ff0de,
  title = {Geologic Setting of the Hamme Tungsten District, North Carolina and Virginia},
  author = {John Mason Parker},
  year = {1963},
  doi = {10.3133/b1122g},
  url = {https://pubs.usgs.gov/publication/b1122G},
  note = {Source identifier: b1122G}
}