@misc{indiciae7e32ac7d8e78,
  title = {Mineral resources of the United States, 1892},
  author = {David T. Day},
  year = {1893},
  doi = {10.3133/70175767},
  url = {https://pubs.usgs.gov/publication/70175767},
  note = {Source identifier: 70175767}
}