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Periodensystem Mendelejews. Graphik aus Mendelejeff Die periodische Gesetzmigkeit der Elemente In Annalen der Chemie und Pharmacie VIII Supplementband Fundstelle seilnacht htm ChrisM de PDold original upload log de Leyo CommonsHelper page de PeriodensystemMendelejews ChrisM bytes no aus Annalen der Chemie und Pharmacie