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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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30 dic 1774 año - farmer transferred cowpox to wife and kids
Añadido al timeline:
History of Medicine
By
lisa
14 dic 2017
0
0
941
fecha:
30 dic 1774 año
Ahora mismo
~ 251 years ago
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