@misc{indiciaea968937f7177,
  title = {Annual and accrued mineral production, royalty income, and related statistics},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1964},
  doi = {10.3133/25139},
  url = {https://pubs.usgs.gov/publication/25139},
  note = {Source identifier: 25139}
}