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上薗 一郎, 中園 充紀, 上村 幸廣. "水稲および水田転作作物によるかんがい水中硝酸態窒素浄化能(22. 環境保全, 2004年度大会講演要旨集)." Abstracts of the Annual Meetings, Japanese Society of Soil Science and Plant Nutrition 50.0 (2004) 186