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jan 1, 1840 - 19C中期 机器制造业实现机械化
Description:
#1840
Added to timeline:
人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS
By
GUZI
10 months ago
4
0
3970
Date:
jan 1, 1840
Now
~ 186 years ago
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