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1 янв 723 г. - 723 AD - Yi Xing invents the mechanical clock
Описание:
China
Добавлено на ленту времени:
Humanities timeline
By
Irene
5 ноя 2019
1
0
224
Дата:
1 янв 723 г.
Сейчас
~ 1303 г назад
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