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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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18 июл 1945 г. - Glenn Seaborg recognizes lanthanides and actinides, placed below the periodic table.
Добавлено на ленту времени:
1st Nine Weeks Honor Project Chemistry
By
Ayanna
18 окт 2018
0
0
443
Дата:
18 июл 1945 г.
Сейчас
~ 80 г назад
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