@misc{indiciae55f17b0cd5aa,
  title = {Thirty-seventh annual report of the Director of the United States Geological Survey},
  author = {George Otis Smith},
  year = {1916},
  doi = {10.3133/ar37},
  url = {https://pubs.usgs.gov/publication/ar37},
  note = {Source identifier: ar37}
}