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"今藤泰輔,山田桂太,野中最子,永西修,樋口浩二,真貝拓三,小林洋介,吉田尚弘","反芻動物起源メタンの安定同位体比の日変動と要因解明","2010年度日本地球化学会第57回年会","2010年度日本地球化学会第57回年会講演要旨集","日本地球化学会",,,"p. 217",2010,Sept.