@misc{indiciae2a58b76f9840,
  title = {Tungsten deposits of Vance County, North Carolina, and Mecklenburg County, Virginia},
  author = {Gilbert H. Espenshade},
  year = {1947},
  doi = {10.3133/b948a},
  url = {https://pubs.usgs.gov/publication/b948A},
  note = {Source identifier: b948A}
}