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Shin-ya YOKOYAMA
Coal Mining Research Center, Hokkaido, National Research Institute for Pollution and Resources
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Ken-ichi TANAKA
Department of Chemistry, Faculty of Engineering, Hokkaido University
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Koshiro MIYAHARA
Research Institute for Catalysis, Hokkaido University
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Isao TAKAKUWA
Coal Mining Research Center, Hokkaido, National Research Institute for Pollution and Resources
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Minoru SEISHO
Coal Mining Research Center, Hokkaido, National Research Institute for Pollution and Resources