@misc{indiciae026ad283945c,
  title = {Geologic map of the Howard Quarter quadrangle, northeastern Tennessee},
  author = {Leonard D. Harris and Robert B. Mixon},
  year = {1970},
  doi = {10.3133/gq842},
  url = {https://pubs.usgs.gov/publication/gq842},
  note = {Source identifier: gq842}
}