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7 Apr 1977 Jahr - 723 AD - Yi Xing invents the mechanical clock

Beschreibung:

China

Zugefügt zum Band der Zeit:

Humanities Timeline (With some random birthdayz)

BySarah LeDoux
6 Nov 2019
1
0
216

Datum:

7 Apr 1977 Jahr
Jetzt
~ 48 years ago
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