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*Hiroyuki IKEDA
Univ. Forests in Chiba, Grad. School of Agric. and Life Sci.,the Univ. of Tokyo
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Masaya MASUMORI
Grad. School of Agric. and Life Sci.,the Univ. of Tokyo
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Kazuaki TSUJI
Arboricultural Research Institute , Grad. School of Agric. and Life Sci.,the Univ. of Tokyo
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Tsuguo SAKURA
Arboricultural Research Institute , Grad. School of Agric. and Life Sci.,the Univ. of Tokyo
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Takeshi TANGE
Univ Forests, Grad. School of Agric. and Life Sci.,the Univ. of Tokyo
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Yuji IDE
Grad. School of Agric. and Life Sci.,the Univ. of Tokyo