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| Dust measuring in Berlin in 1905 |
Berlin was a "progressive" city already in the early 20th century. Devices like the one above were used to measure the dust level in the center of the city.
Showing posts with label Pollution. Show all posts
Showing posts with label Pollution. Show all posts
Tuesday, 12 March 2013
Measuring air pollution in Berlin (in 1905)
Berlin was a "progressive" city already in the early 20th century. Devices like the one above were used to measure the dust level in the center of the city.
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