Atom, Simona Zorman
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Spletišče spletnega tečaja h5p
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Viri: https://sl.wikipedia.org/wiki/Zemljoalkalijska_kovina https://sl.wikipedia.org/wiki/%C5%BDivo_srebro https://sl.wikipedia.org/wiki/Baker https://sl.wikipedia.org/wiki/Zlato https://sl.wikipedia.org/wiki/%C5%BDelezo
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