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8 сент 1854 г. - Dr. John Snow
Описание:
Used mapping to illustrate how cases of cholera were centered around a water pump.
Добавлено на ленту времени:
22 сен 2017
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844
GIS_TIMELINE
GEOS 406
Дата:
8 сент 1854 г.
Сейчас
~ 169 г назад