@misc{indiciae74e5bb44bb63,
  title = {Results of spirit leveling in New York, 1906 to 1911, inclusive},
  author = {Robert Bradford Marshall},
  year = {1912},
  doi = {10.3133/b514},
  url = {https://pubs.usgs.gov/publication/b514},
  note = {Source identifier: b514}
}