@misc{indiciaeb35bbf2aa717,
  title = {The Global Flows of Metals and Minerals},
  author = {Donald G. Rogich and Grecia R. Matos},
  year = {2008},
  doi = {10.3133/ofr20081355},
  url = {https://pubs.usgs.gov/publication/ofr20081355},
  note = {Source identifier: ofr20081355}
}