@misc{indiciaec9e1bb497c21,
  title = {The brown iron ores of west-middle Tennessee},
  author = {E. F. Burchard},
  year = {1927},
  doi = {10.3133/b795d},
  url = {https://pubs.usgs.gov/publication/b795D},
  note = {Source identifier: b795D}
}