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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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24 dic 123 anni - Zhang Hen invented seismograph
Aggiunto al nastro di tempo:
Ancient China History
By
Kevin Pineapple
1 feb 2018
2
0
1383
Data:
24 dic 123 anni
Adesso
~ 1903 years ago
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