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筛选: 创造者 Grossman, Gene M. 删除限定条件 创造者: Grossman, Gene M. 学科 F41 - Macroeconomic aspects of international trade and finance - Open economy macroeconomics 删除限定条件 学科: F41 - Macroeconomic aspects of international trade and finance - Open economy macroeconomics 学科 O33 - Technological change ; Research and development - Technological change : Choices and consequences ; Diffusion processes 删除限定条件 学科: O33 - Technological change ; Research and development - Technological change : Choices and consequences ; Diffusion processes

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