1. Copper, lead, and zinc concentrations in stream sediment, Metasville Quadrangle, Wilkes and Lincoln Counties, Georgia;Carpenter;Ga. Geol. Surv., Inf. Circ.,1971
2. Fe-Mn oxide coatings in stream sediment geochemical surveys;Carpenter;J. Geochem. Explor.,1975
3. Selective dissolution of manganese oxides from soils and sediments with acidified hydroxylamine hydrochloride;Chao,1972
4. Atomic absorption spectrophotometric determination of microgram levels of Co, Ni, Cu, Ph, and Zn in soil and stream sediment extracts containing large amounts of Mn and Fe;Chao;U.S. Geol. Surv., J. Res.,1973
5. The significance of secondary iron and manganese oxides in geochemical exploration;Chao;Econ. Geol.,1976