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23 marzo 1849 anni - 1849- John Snow. Realiza el primer estudio epidemiológico del cólera en Londres.

Aggiunto al nastro di tempo:

Microbiología

Byroberto del real
19 set 2018
0
0
1311

Data:

23 marzo 1849 anni
Adesso
~ 176 years ago

Immagini:

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