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Kiyoshi SEGAWA
Tokyo Research Institute, Yawata Iron & Steel Co., Ltd.
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Eiichi TSUNETOMI
Tokyo Research Institute, Yawata Iron & Steel Co., Ltd.
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Yasushi NAKAMURA
Tokyo Research Institute, Yawata Iron & Steel Co., Ltd.
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Hiroyuki KATAYAMA
Tokyo Research Institute, Yawata Iron & Steel Co., Ltd.