TY - RPRT TI - The studying of washing of arsenic and sulfur from coals having different ranges of arsenic contents AU - M. Wang AU - D. Song AU - B. Zheng AU - R. B. Finkelman PY - 2008 DO - 10.1196/annals.1454.018 UR - https://pubs.usgs.gov/publication/70033735 ID - 70033735 ER -