@a贸易上游度与出口产品质量@Amao yi shang you du yu chu kou chan pin zhi liang@e理论机制与实证分析@d= The upstream degree of trade and the quality of export products@etheoretical mechanism and empirical analysis@f唐青青著@zeng
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贸易上游度与出口产品质量:理论机制与实证分析= The upstream degree of trade and the quality of export products:theoretical mechanism and empirical analysis/唐青青著.-北京:经济管理出版社,2024.07