@misc{indiciae62c73d181cbf,
  title = {Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Gypsum, Plasters},
  author = {Millard King Shaler},
  year = {1907},
  doi = {10.3133/b315h},
  url = {https://pubs.usgs.gov/publication/b315H},
  note = {Source identifier: b315H}
}