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*Seiji Ishibashi
University Forest in Chichibu, Graduate School of Agricultural and Life Sciences, The University of Tokyo
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Akio Fujiwara
University Forest in Chichibu, Graduate School of Agricultural and Life Sciences, The University of Tokyo
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Kiyotatsu Yamamoto
University Forest at Yamanakako, Graduate School of Agricultural and Life Sciences, The University of Tokyo
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Tadashi Maehara
Experimental Station at Tanashi, Graduate School of Agricultural and Life Sciences, The University of Tokyo