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18 März 1854 Jahr - John Snow

Beschreibung:

60% of people frinking water from pump had cholera
VS 7% of people drinking from another pump
it was dirty water not miasma

Zugefügt zum Band der Zeit:

new disease

14 Dez 2018

1

0

553

Datum:

18 März 1854 Jahr

Jetzt

~ 171 years ago

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