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Mochamad Nugraha KARTADINATA
Department of Earth and Environmental Sciences, Faculty of Science, Kagoshima University
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Mitsuru OKUNO
Department of Earth System Science, Faculty of Science, Fukuoka University
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Toshio NAKAMURA
Center for Chronological Research, Nagoya University
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Tetsuo KOBAYASHI
Department of Earth and Environmental Sciences, Faculty of Science, Kagoshima University