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*Mineaki Aizawa
Institute of Envoronmental Studies, Graduate school of Frontier Sciences, The University of Tokyo
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Hiroshi Yoshimaru
Forestry and Forest Products Research Institute
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Hideyuki saito
Division of Environmental Resources, Graduate School of Agriculture, Hokkaido University
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Toshio katsuki
Tama Forest Science Garden,Forestry and Forest Products Research Institute
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Takayuki Kawahara
Hokkaido Research Center,Forestry and Forest Products Research Institute
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Keiko Kitamura
Hokkaido Research Center,Forestry and Forest Products Research Institute
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Mikio Kaji
Institute of Envoronmental Studies, Graduate school of Frontier Sciences, The University of Tokyo