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*Norio Sahashi
Forestry and Forest Products Research Institute
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Mitsuteru Akiba
Forestry and Forest Products Research Institute
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Makoto Ishihara
Kyushu Research Center, Forestry and Forest Products Research Institute
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Kazuhiro Miyazaki
Kyushu Research Center, Forestry and Forest Products Research Institute
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Shin'ichi Seki
Kyushu Research Center, Forestry and Forest Products Research Institute