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*Kazuhiro Yonemura
Faulty of Social and Cultural Studies, Kyushu University
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Yasuhito Osanai
Faulty of Social and Cultural Studies, Kyushu University
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Nobuhiko Nakano
Faulty of Social and Cultural Studies, Kyushu University
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Masaaki Owada
Graduate school of Science and Technology, Yamaguchi University
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Sotaro Baba
Department of Natural Environment Education, University of the Ryukyus