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Free Images: "bestof:CuSO4 hydrát.png en Copper II sulfate - CuSO<sub>4</sub> 5 H<sub>2</sub>O cs Síran měďnatý - CuSO<sub>4</sub> 5 H<sub>2</sub>O own Ondřej Mangl 7 8 2011"
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