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Periodická sústava prvkov
Category:
Other
Updated:
16 Oct 2017
História PSP
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573
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Created by
Michaela Sekerešová
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Pokus
By
Michaela Sekerešová
18 Oct 2017
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563
Veľké storočie vedy a techniky
By
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26 Nov 2017
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540
Events
Antoine Laurent de Lavoisier
Alexandre-Émile Beguyer de Chancourtois
John Newlands' Octaves
Dmitrij Ivanovič Mendelejev
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