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*Tomoyuki TANIGUCHI
Graduate School of Life and Environmental Sciences, University of Tsukuba
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Takao MASUMOTO
National Institute of Rural Engineering, NARO
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Takeo YOSHIDA
National Institute of Rural Engineering, NARO
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Naoki HORIKAWA
National Institute of Rural Engineering, NARO
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Ryoji KUDOH
National Institute of Rural Engineering, NARO