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*Mamoru Murata
Department of Geosciences, faculty of Science, Naruto University of Education
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Michio Kiji
Osaka Prefecture Mino-higashi High School
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Hiroaki Ozawa
Department of Geosciences, faculty of Science, Naruto University of Education
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Hiroshi Nishimura
Department of Geosciences, faculty of Science, Naruto University of Education