About Takahashi Kazushi
About National Graduate Institute for Policy Studies, Tokyo, Japan
About Muraoka Rie
About National Graduate Institute for Policy Studies, Tokyo, Japan
About Muraoka Rie
About Japan International Research Center for Agricultural Sciences, Tsukuba, Japan
About Otsuka Keijiro
About Social System Innovation Center, Kobe University, Kobe, Japan
About Agricultural Economics
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About farmer
About case study
About crop yield
About Sahara
About agriculture
About farm
About developing country
About Africa
About food
About 社会的ネットワーク
About 農場管理
About 農業生産性
About 技術採用
About agricultural extension
About productivity impact
About technology adoption
About technological diffusion
About O13
About O33
About Q16
About Agricultural economy,agricultural management
About 発展途上国
About 農業
About 採用
About 拡張
About 文献
About レビュー