[ej-九游会俱乐部

[ej-00-2]assessing the contribution of research system and cg genetic materials to the total factor productivity of rice in china

作者：　　期刊： 　　来源：

作者：hu, ruifa, jikun huang, songqing jin and scott rozelle　　期刊：journal of rural development, 23 (summer 2000):33-70　　来源： ccap