@misc{indiciaedf04867d4ee9,
  title = {Is the extraction of thorium onto MnO 2 -coated filter cartridges uniform?},
  author = {Peter W. Swarzenski and M. Baskaran},
  year = {2004},
  doi = {10.3133/ofr20041421},
  url = {https://pubs.usgs.gov/publication/ofr20041421},
  note = {Source identifier: ofr20041421}
}