@misc{indiciae2f4b18bc20f0,
  title = {Geochemical survey of the Tray Mountain Roadless Area, northern Georgia},
  author = {R. P. Koeppen and A. E. Nelson},
  year = {1988},
  doi = {10.3133/mf1347b},
  url = {https://pubs.usgs.gov/publication/mf1347B},
  note = {Source identifier: mf1347B}
}