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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 abr 1869 ano - Менделеев открыл периодический закон химических элементов.
Adicionado na linha do tempo:
развитие науки
By
Илона Балани
23 dez 2017
0
0
557
Data:
27 abr 1869 ano
Agora
~ 156 years ago
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