@misc{indiciaef4a4fdb6a284,
  title = {Spirit leveling in West Virginia, 1896 to 1915, inclusive},
  author = {Robert Bradford Marshall},
  year = {1916},
  doi = {10.3133/b632},
  url = {https://pubs.usgs.gov/publication/b632},
  note = {Source identifier: b632}
}