@misc{indiciaef019003a2097,
  title = {Spirit leveling in California, 1896-1923: 41 degrees to 42 degrees latitude, 124 degrees to 125 degrees longitude},
  author = {Claude Hale Birdseye},
  year = {1925},
  doi = {10.3133/b766aaa},
  url = {https://pubs.usgs.gov/publication/b766AAA},
  note = {Source identifier: b766AAA}
}