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jan 1, 1821 - hygienia paranee

Description:

viemärit ja vesijohto, valaistus, kolera väistyy likaisesta vedestä

Added to timeline:

teollistuminen ja keksinnöt

ByEmmi Laakso
19 Sep 2022
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Date:

jan 1, 1821
Now
~ 204 years ago
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