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1983 Compilation of Elemental Concentration Data for Samples SO-1 to SO-4Ernest S. GLADNEY; Colleen E. BURNS; Iwan Roelandts · 1985
1982 Compilation of Elemental Concentration Data for the United States Geological Survey's Geochemical Exploration Reference Samples GXR -1 to GXR - 6Ernest S. GLADNEY; Colleen E. BURNS; Iwan ROELANDTS · 1984