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Moritami YASUE
Fac. of Agric., Gifu Univ.
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Koichi OGIYAMA
Fac. of Agric., Yamagata Univ.
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Shoji SUTO
Fac. of Agric., Yamagata Univ.
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Hatsuo TSUKAHARA
Fac. of Agric., Yamagata Univ.
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Fumihiko MIYAHARA
Fukuoka Pref. Forest Exp. Stn.
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Kihachiro OHBA
Inst. of Agric. and For., Univ. of Tsukuba