@misc{indiciaea413a375589c,
  title = {A new cation-exchange method for accurate field speciation of hexavalent chromium},
  author = {J.W. Ball and R. Blaine McCleskey},
  year = {2003},
  doi = {10.1016/s0039-9140(03)00282-0},
  url = {https://pubs.usgs.gov/publication/70024952},
  note = {Source identifier: 70024952}
}