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1 janv. 1796 - 18C晚期 （英）詹纳发明牛痘接种法

Description:

#1796

使天花的发病率大大降低

Ajouté au bande de temps:

人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS

ByGUZI
il y a 8 mois
4
0
3482

Date:

1 janv. 1796
Maintenaint
~ Il y a 229 ans
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