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*HIROYUKI TOBITA
Hokkaido Research Center, Forestry and Forest Products Research Institute
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AKIRA 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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SATOSHI KITAOKA
Hokkaido Research Center, Forestry and Forest Products Research Institute
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HAJIME UTSUGI
Hokkaido Research Center, Forestry and Forest Products Research Institute