@misc{indiciaec9e8a79dd7d3,
  title = {Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Mineral Paints},
  author = {Ernest Francis Burchard and Edwin Clarence Eckel},
  year = {1907},
  doi = {10.3133/b315n},
  url = {https://pubs.usgs.gov/publication/b315N},
  note = {Source identifier: b315N}
}