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describe an environmental problem in vietnam
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describe an environmental problem in vietnam, environmental pollution in vietnam, vietnam war environmental impact, current problems in vietnam, vietnam issues and problems, current issues in vietnam, economic problems in vietnam, political environment in vietnam, industrial pollution in vietnam, water pollution in vietnam, technological environment in vietnam, problems in vietnam today, air pollution in vietnam, pollution in hanoi vietnam, climate change situation in vietnam, climate change impacts in vietnam, what were the conditions of vietnam, vietnam natural resources and environment
