@misc{indiciaead167e923ab0,
  title = {Topographic instructions of the United States Geological Survey. Introduction},
  author = {Claude Hale Birdseye},
  year = {1928},
  doi = {10.3133/b788},
  url = {https://pubs.usgs.gov/publication/b788},
  note = {Source identifier: b788}
}