6 févr. 1854 - John Snow
Description:
Snow believed that cholera was caused by dirty water and not miasma. He had authorities remove the handle on a pump on Broad Street in Soho. 60% of the people who drank from this pump had choleraAjouté au bande de temps:
Date:
6 févr. 1854
Maintenaint
~ Il y a 171 ans