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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 янв 1937 г. - Technetium is the first articficially produced element.
Описание:
By Pierre and Segre in Italy
Добавлено на ленту времени:
TC99m
By
Caitlin
24 окт 2017
0
0
625
Дата:
1 янв 1937 г.
Сейчас
~ 88 г назад
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