30 май 1854 г. - Cholera & John Snow
Описание:
John Snow got authorities to remove the pump handle at the Broad Street pump in Soho, the cause of cholera outbreak at the time. 60% of people who drank water from this pump had cholera. Led Snow to believe that cholera was cause by dirty water and not miasma.Добавлено на ленту времени:
Дата:
30 май 1854 г.
Сейчас
~ 171 г назад