The purification of alkali cyanide melts von Lessing, J.G.V., Fouché, K.F., Retief, T.T.

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Separation of carrier-free rhodium-105 from neutron-irradiated ruthenium by extraction from molten cyanide von Lessing, J. G. V, Fouche, K. F

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Influence of cyanide on the extraction of transition elements from molten and aqueous thiocyanate with quaternary amines von Lessing, J.G.V., Brink, P.A., Fouché, K.F.

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Benzylphenylarsinic acid as extractant for Zr(IV) and Hf(IV) von Fouché, K.F., Lessing, J.G.V.

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Separation of rhodium from iridium by extraction from molten cyanide von Fouché, K.F., Lessing, J.G.V., De Kock, N.J.

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