@misc{indiciaefd468f0e383b,
  title = {Manganese deposits in the Nevada district, near Ely, Nevada},
  author = {R. J. Roberts and J. M. Nelson},
  year = {1941},
  doi = {10.3133/ofr4123},
  url = {https://pubs.usgs.gov/publication/ofr4123},
  note = {Source identifier: ofr4123}
}