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*Nagayoshi Katsuta
Faculty of Education, Gifu University
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Ichiko Shimizu
Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo
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Masao Takano
Graduate School of Environmental Studies, Nagoya University
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Shin-ichi Kawakami
Faculty of Education, Gifu University
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H. H. Helmstaedt
Department of Geological Sciences, Queen's University
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Mineo Kumazawa
Graduate School of Environmental Studies, Nagoya University