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Hiroyuki TOBITA
Hokkaido Research Center, Forestry and Forest Products Research Institute
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Akita Uemura
Hokkaido Research Center, Forestry and Forest Products Research Institute
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Mitsutoshi KITAO
Hokkaido Research Center, Forestry and Forest Products Research Institute
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[in Japanese]
Hokkaido Research Center, Forestry and Forest Products Research Institute
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Hajime Utsugi
Hokkaido Research Center, Forestry and Forest Products Research Institute