Study on the environmental effects of free trade 并列题名：Study on the environmental effects of free trade Study on the environmental effects of China's two-way FDI The environmental effects of trade 书名原文:The environmental effects of trade 并列题名：Study on the environmental effects of China's two-way FDI Study on the environmental externalities of foreign direct investment Soil toxicology and environmental effects of microplastics A study on the environmental history in the area of Jianghan lakes Study on the effect of environmental policies on resource allocation