About KONDO KATSUNOBU
About YAMAMOTO YASUTAKA
About 北大 大学院農学研究院
About SHIN Yongkwang
About 国立韓国農水産大
About 農林業問題研究
About agricultural management
About scale
About economy(efficiency)
About productivity
About regional difference
About simultaneous analysis
About Republic of Korea
About cultivation
About case study
About paddy rice
About rice crop
About Agricultural economy,agricultural management
About Rice cropping
About 規模
About 経済
About 地域
About 推移
About 地域間格差
About 同時分析
About 韓国
About 稲作