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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 янв 1917 г. - Fredrick Soddy is credited for the discovery of Protactinium
Добавлено на ленту времени:
My Atom Project
By
Joan Kirimi
16 окт 2017
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470
Дата:
1 янв 1917 г.
Сейчас
~ 108 г назад
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