Journal of productivity analysis. 1995;6(2):117-135. doi: 10.1007/bf01073407 Q21.82025
R&D and productivity: A broad cross-section cross-country look
研发与生产率:一项广泛的跨国横截面分析
DOI: 10.1007/bf01073407
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Journal of productivity analysis. 1995;6(2):117-135. doi: 10.1007/bf01073407 Q21.82025
DOI: 10.1007/bf01073407
摘要 查看摘要