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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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17 magg 1869 anni - Д.И. Менделеев открыл Периодический закон
Aggiunto al nastro di tempo:
History of science in Russia
By
Andrew Miandin
14 dic 2017
0
0
590
Data:
17 magg 1869 anni
Adesso
~ 156 years ago
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