@misc{indiciae37c71189f4a0,
  title = {Copper Ridge zinc district, eastern Tennessee},
  author = {John Rodgers and D. F. Kent and R.M. Hutchinson},
  year = {1943},
  doi = {10.3133/ofr4342},
  url = {https://pubs.usgs.gov/publication/ofr4342},
  note = {Source identifier: ofr4342}
}