@misc{indiciaecbd69bd615b0,
  title = {Tin resources of the Kings Mountain district, North Carolina and South Carolina},
  author = {Arthur Keith and D.B. Sterrett},
  year = {1918},
  doi = {10.3133/b660d},
  url = {https://pubs.usgs.gov/publication/b660D},
  note = {Source identifier: b660D}
}