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*Kiyoyuki Shigeno
Graduate School of Science and Engineering, Ibaraki University Meiji Consultant Co., Ltd.
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Masayuki Ishii
Geological Association of Hokkaido
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Futoshi Nanayama
Geological Survey of Japan, AIST
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Yoshikazu Kokubo
Hokkaido Kushiro Technical High School
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Junichi Yamashiro
Kushiro City Historical Museum
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Yasuo Kondo
Kochi University
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Yoshiaki Matsushima
Kanagawa Prefectural Museum of Natural History
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Yoshiharu Yokoyama
Earth-Appraisal Co., Ltd.
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Ryo Uehara
Ibaraki University
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Hisao Ando
Ibaraki University