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*Futoshi Nanayama
The National Institute of Advanced Industrial Science and Technology
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Kiyoyuki Shigeno
Meiji Consultant Co. Ltd.
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Kazuaki Watanabe
The National Institute of Advanced Industrial Science and Technology
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Hideki Yoshikawa
The National Institute of Advanced Industrial Science and Technology
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Takeshi Hasegawa
Ibaraki University
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Yasuo Ikeda
Hokkaido University of Education
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Yaeko Igarashi
Institute for Paleoenvironment of northern regions
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Fumio Akiba
Diatom Minilab.
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Yasuto Uchida
Geological Survey of Hokkaido, Hokkaido Research Organization
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Kazuto Ishiwata
Betsukai Museum