@misc{indiciaeaac9df369384,
  title = {Results of spirit leveling in Alabama, Georgia, North Carolina, South Carolina, and Tennessee, 1896 to 1909, inclusive},
  author = {Robert Bradford Marshall},
  year = {1911},
  doi = {10.3133/b441},
  url = {https://pubs.usgs.gov/publication/b441},
  note = {Source identifier: b441}
}