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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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2 jun 1898 año - Paul-Louis Simond
Descripción:
Proved that fleas were transmitting Y. Pestis
Añadido al timeline:
B HLTH 224
By
Kelly Stevens
13 dic 2018
1
0
908
fecha:
2 jun 1898 año
Ahora mismo
~ 127 years ago
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