@misc{indiciaebaf5d0d69f13,
  title = {Spirit leveling in California, 1896-1923: Introduction},
  author = {Claude Hale Birdseye},
  year = {1925},
  doi = {10.3133/b766a},
  url = {https://pubs.usgs.gov/publication/b766A},
  note = {Source identifier: b766A}
}