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*Masayuki Ohnishi
Department of Chemistry and Bioscience, College of Science and Industrial Technology, Kurashiki University of Science and the Arts
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Shoichi Kobayashi
Department of Earth Sciences, Faculty of Science, Okayama University of Science
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Isao Kusachi
Department of Earth Sciences, Faculty of Education, Okayama University
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Yoshiteru Fujiwara
Nippon Chigaku Kenkyu-kai
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Katsuichi Nishida
Nippon Chigaku Kenkyu-kai