@misc{indiciae3b36c3f3931e,
  title = {Forty-fourth annual report of the Director of the United States Geological Survey},
  author = {George Otis Smith},
  year = {1923},
  doi = {10.3133/ar44},
  url = {https://pubs.usgs.gov/publication/ar44},
  note = {Source identifier: ar44}
}