@misc{indiciaed5487c0a7f9b,
  title = {Twenty-ninth annual report of the Director of the United States Geological Survey},
  author = {George Otis Smith},
  year = {1908},
  doi = {10.3133/ar29},
  url = {https://pubs.usgs.gov/publication/ar29},
  note = {Source identifier: ar29}
}