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奥村 晃史
Graduate School of Letters, Hiroshima University
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小野 昭
Archaeology Laboratory, Tokyo Metropolitan University
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熊井 久雄
1-800-1-204 Kusabe, Nishi-ku, Sakai, Osaka
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町田 洋
15-7 Shiratoridai, Aoba-ku, Yokohama
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水野 清秀
Institute of Geology and Geoinformation, Geological Survey of Japan, AIST