About FUKUMOTO MASATO
About 農村工学研究所技報
About paddy field
About rotational upland field
About performance
About field (agriculture)
About drainage (water)
About subsoil
About crack
About waterway
About permeability test
About spot (position)
About cylinder (hollow body)
About evaluation
About water permeability
About soil water
About underdrainage
About water channel
About シリンダーインテークレート試験
About drainage performance
About 排水性評価
About Civil engineering geology and hydrogeology in general
About Agricultural engineering
About 直径
About 試験
About 転換畑
About 排水性
About 評価