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Syuichi IKEDA
Faculty of Agriculture, Utsunomiya University
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Seiichi OKUDA
Faculty of Agriculture, Utsunomiya University
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Hiromitsu NEGISHI
[in Japanese]
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Tomohide NATSUAKI
Faculty of Agriculture, Utsunomiya University
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Michiaki TERANAKA
Faculty of Agriculture, Utsunomiya University
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Yoji DOI
[in Japanese]