@misc{indiciaed3987b0cec82,
  title = {A new cation-exchange method for accurate field speciation of hexavalent chromium},
  author = {James W. Ball and R. Blaine McCleskey},
  year = {2003},
  doi = {10.3133/wri034018},
  url = {https://pubs.usgs.gov/publication/wri034018},
  note = {Source identifier: wri034018}
}