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*Kazumi Kobayashi
Faculty of Bioresource Sciences, Akita Prefectural University
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Kazuhiko Hoshizaki
Faculty of Bioresource Sciences, Akita Prefectural University
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Kazumasa Ohta
Faculty of Bioresource Sciences, Akita Prefectural University
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Kuniaki Matsuura
Faculty of Bioresource Sciences, Akita Prefectural University
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Akifumi Makita
Faculty of Bioresource Sciences, Akita Prefectural University
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Osamu Nakakita
Forestry and Forest Products Research Institute