Equisetum plants and the cycling of mercury at Mount St. Helens von Siegel, Barbara Z, Siegel, Sanford M, Horsky, Stanya J

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Reply to letter of E.L. Kothny von Horsky, S.J.

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A practical method for the analysis of rare-earth elements in geological samples by graphite furnace atomic absorption and X-ray fluorescence von Juras, S.J., Hickson, C.J., Horsky, S.J., Godwin, C.I., Mathews, W.H.

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Evaluation of a combined ion exchange-graphite furnace atomic absorption procedure for determination of rare-earth elements in geological samples von Horsky, S.J., Fletcher, W.K.

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Biogeochemistry, a prospecting tool in the search for mercury mineralization von Warren, H.V., Horsky, S.J., Kruckeberg, A., Towers, G.H.N., Armstrong, J.E.

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