@misc{indiciaef59e2c51cca2,
  title = {Mineral resource of the month: tantalum},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2011},
  url = {https://pubs.usgs.gov/publication/70045900},
  note = {Source identifier: 70045900}
}