Two Blades of Grass: The Impact of the Green Revolution
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We examine the economic impact of high-yielding crop varieties (HYVs) in developing countries 1960-2000. We use time variation in the development and diffusion of HYVs of 10 major crops, spatial variation in agro-climatically suitability for growing them, and a differences-in-differences strategy to
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美国国家经济研究局创建时间：
2018-06-01
