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International Comparisons of R&D Expenditure: Does an R&D PPP Make a Difference? [PDF]
Sean M. Dougherty +3 more
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An Analysis of Personal Consumption Expenditures as Related to Recreation 1946–1976
Journal of Leisure Research, 1982exaly
EFFECT OF R D EXPENDITURES ON VALUE ADDED IN OECDCOUNTRIES
2016ÇETİN, Dilek, DOYAR, Bayram Veli
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