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The upper Nanpan river in Qujing city, Yunnan province, China is heavily polluted. Its main stream (122 km long) is …
Persistent link: https://www.econbiz.de/10005002579
Water pollution is one of China's most pressing environmental issues, but a recent economic study in Yunnan province …
Persistent link: https://www.econbiz.de/10005002597