TY - BOOK AU - Cameron,E.M. TI - Three geochemical standards of Sulphide-bearing ultramafic rock : : U.M. 1, U.M. 2, U.M. 4 / PY - 1972/// CY - Ottawa : PB - Department of Energy, Mines and Resources, KW - Ores KW - Canada KW - Sampling and estimation KW - Rocks KW - Analysis KW - Sulphides N1 - Bibliography ( p. 10) ER -