@misc{indiciae15c94c250960,
  title = {Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Building Stone and Road Metal},
  author = {Thomas Nelson Dale},
  year = {1907},
  doi = {10.3133/b315j},
  url = {https://pubs.usgs.gov/publication/b315J},
  note = {Source identifier: b315J}
}