Giannini Foundation for Agricultural EconomicsDecember 2001 The Creation and Spread of Technology and Total Factor Productivity in China’s AgricultureSongqing Jin,Jikun Huang,Ruifa Hu,Scott Rozelle,Copyright Songqing Jin,John M Antle, Cristina C David,Xinshen Diao,Robert E Evenson,Shenggen Fan,D Gale Johnsonmag(2001)引用 23|浏览9暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要