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![]() Urbanisierung ![]() ![]() ![]() Environmental problems in the Himalayas – Chicago 1820 Source: The Urbanization of the World ![]() ![]() Environmental problems in the Himalayas – Chicago 1854 Source: The Urbanization of the World ![]() ![]() Environmental problems in the Himalayas – Chicago 1898 Source: The Urbanization of the World ![]() ![]() Environmental problems in the Himalayas – Chicago today ![]() ![]() |