@misc{indiciae72ad29f4f5d5,
  title = {Geology of the Blockhouse quadrangle, Tennessee},
  author = {Robert B. Neuman and Robert Lake Wilson},
  year = {1960},
  doi = {10.3133/gq131},
  url = {https://pubs.usgs.gov/publication/gq131},
  note = {Source identifier: gq131}
}