@misc{indiciaecc5b40a14067,
  title = {Contributions to economic geology, 1918, Part I, Metals and nonmetals except fuel},
  author = {F. L. Ransome and Ernest Francis Burchard and Hoyt S. Gale},
  year = {1919},
  doi = {10.3133/b690},
  url = {https://pubs.usgs.gov/publication/b690},
  note = {Source identifier: b690}
}