There are many exceptions to this rule, however, including iron being put in the same group as sulfur and oxygen - explaining why it was disregarded by other scientists (1 Jan 1864 Jahr – 23 St. 59 Min, 31 Dez 1864 Jahr)
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Datum:
1 Jan 1864 Jahr
23 St. 59 Min, 31 Dez 1864 Jahr
~ 12 months