TY  - RPRT
TI  - A new cation-exchange method for accurate field speciation of hexavalent chromium
AU  - James W. Ball
AU  - R. Blaine McCleskey
PY  - 2003
DO  - 10.3133/wri034018
UR  - https://pubs.usgs.gov/publication/wri034018
ID  - wri034018
ER  -