TY - RPRT TI - Sequential solvent extraction for forms of antimony in five selected coals AU - C. Qi AU - Gaisheng Liu AU - Y. Kong AU - C. L. Chou AU - R. Wang PY - 2008 DO - 10.1086/529155 UR - https://pubs.usgs.gov/publication/70031818 ID - 70031818 ER -