TY - BOOK AU - Oman, Charles L. AU - Finkelman, Robert B. AU - Tewalt, Susan J. CN - I 19.76: CY - [Reston, Va.?] : DA - [1997] ID - 238454 KW - Platinum group. KW - Coal N1 - Shipping list no.: 2000-0902-M. PB - U.S. Dept. of the Interior, U.S. Geological Survey, PP - [Reston, Va.?] : PY - [1997] T1 - Concentrations of platinum group elements in 122 U.S. coal samples TI - Concentrations of platinum group elements in 122 U.S. coal samples ER -