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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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22 март 1897 г. - 1897 J.J. Thomson Discovered electrons
Добавлено на ленту времени:
chemistry
By
D'Kerrington Traylor
19 сен 2017
0
0
549
Дата:
22 март 1897 г.
Сейчас
~ 128 г назад
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