TY - BOOK AU - Palmer, Curtis A. CN - I 19.76: CY - [Reston, Va.] : DA - [1997] ID - 216586 KW - Trace elements. KW - Coal washing. N1 - Cover title. N1 - Shipping list no.: 99-0388-M. N1 - Chiefly tables. PB - U.S. Dept. of the Interior, U.S. Geological Survey, PP - [Reston, Va.] : PY - [1997] T1 - Modes of occurrence of trace elements in samples from a coal cleaning plant TI - Modes of occurrence of trace elements in samples from a coal cleaning plant VL - 97-732 ER -