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V rt behov av metaller och mineral

Metaller och mineral. Metaller och mineral har skapat frutsttningar fr den moderna civilisationen allt frn stenlder, bronslder, jrnlder till den postindustriella tid vi lever i idag. Metaller r den strsta gruppen av grundmnen, omkring 80 % av alla grundmnen r metallerI stort sett alla

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V rt behov av metaller och mineral

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