@misc{indiciaec42f3e4fe268,
  title = {Contributions to economic geology, 1905: Copper},
  author = {W. H. Weed and W. H. Emmons and A. J. Collier and W. C. Phalen},
  year = {1906},
  doi = {10.3133/b285b},
  url = {https://pubs.usgs.gov/publication/b285B},
  note = {Source identifier: b285B}
}