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*Seiichi Kanetani
Forestry and Forest Products Research Institute
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Ayako Kanazashi
Forestry and Forest Products Research Institute
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Mitsuteru Akiba
Kyushu Research Center, Forestry and Forest Products Research Institute
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Katsunori Nakamura
Tohoku Research Center, Forestry and Forest Products Research Institute
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Kenshi Tetsuka
Yaku-shima Yakutane-goto Research Group
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Hiroharu Ikegame
Tanega-shima Yakutane-goyo Conservation Group
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Hiroshi Yoshimaru
Forestry and Forest Products Research Institute