R&D and Productivity: The International Connection
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Countries differ greatly in R&D spending, and these differences are particularly striking when comparing developed with developing countries. The paper examines the extent to which the benefits of R&D are concentrated in the investing countries. It is argued that significant benefits spill over to
各国在研发（R&D）投入上存在显著差异，且这种差异在发达国家与发展中国家的对比中尤为突出。本文考察了研发（R&D）收益在投资国内部的集中程度，并指出大量收益会溢出到
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美国国家经济研究局创建时间：
1997-07-01
