Chiny węgiel

Redakcja
21-01-2016

http://www.bloomberg.com/news/articles/2016-01-13/china-coal-imports-crash-as-economy-slows-amid-clean-power-shift

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http://www.theguardian.com/environment/2016/jan/19/chinas-coal-burning-in-significant-decline-figures-show?CMP=twt_gu

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