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2 giug 1898 anni - Paul-Louis Simond

Descrizione:

Proved that fleas were transmitting Y. Pestis

Aggiunto al nastro di tempo:

B HLTH 224

ByKelly Stevens

13 dic 2018

1

0

905

Data:

2 giug 1898 anni

Adesso

~ 127 years ago

Immagini:

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