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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
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1 ene 1796 año - 18C晚期 （英）詹纳发明牛痘接种法
Descripción:
#1796
使天花的发病率大大降低
Añadido al timeline:
人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS
By
GUZI
29 sep 2024
4
0
3810
fecha:
1 ene 1796 año
Ahora mismo
~ 229 years ago
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