@misc{indiciae8f0ab54ec5e7,
  title = {Contributions to economic geology, 1918, Part I, Metals and nonmetals except fuels--Manganese at Butte, Montana},
  author = {J. T. Pardee},
  year = {1919},
  doi = {10.3133/b690e},
  url = {https://pubs.usgs.gov/publication/b690E},
  note = {Source identifier: b690E}
}