@misc{indiciae6f89ca7b4ef2,
  title = {Spirit leveling in California, 1896-1923: 41 degrees to 42 degrees latitude, 123 degrees to 124 degrees longitude},
  author = {Claude Hale Birdseye},
  year = {1925},
  doi = {10.3133/b766zz},
  url = {https://pubs.usgs.gov/publication/b766ZZ},
  note = {Source identifier: b766ZZ}
}