@misc{indiciaee91e43acd39a,
  title = {Contributions to economic geology, 1912; Part I, Metals and nonmetals except fuels--Phosphate Rock},
  author = {George W. Stose},
  year = {1914},
  doi = {10.3133/b540l},
  url = {https://pubs.usgs.gov/publication/b540L},
  note = {Source identifier: b540L}
}