About YAMASHITA TADASHI
About 農研機構 農村工研
About YAMAGUCHI SHINJI
About 内閣府 沖縄総合事務局
About ISHIHARA SHOICHI
About 内閣府 沖縄総合事務局
About 農業農村工学会関東支部大会講演会講演要旨
About treated sewage
About Agricultural engineering
About Sewerage engineering and wastewater treatment in general
About Water quality control
About 下水処理水
About 農業
About 塩分
About 対策
About 研究