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*Shgieru Sueoka
Japan Atomic Energy Agency
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Ken-ichi Yasue
Japan Atomic Energy Agency
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Masakazu Niwa
Japan Atomic Energy Agency
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Takahiro Hanamuro
Japan Atomic Energy Agency
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koji Shimada
Japan Atomic Energy Agency
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Tsuneari Ishimaru
Japan Atomic Energy Agency
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Koji Umeda
Japan Atomic Energy Agency
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Tohru Danhara
Kyoto Fission-Track
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Hideki Iwano
Kyoto Fission-Track
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Chitaro Gouzu
Hiruzen Institute for Geology & Chronology