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Yohji FUSHIMI
Center for Research, Training and Guidance in Educational Practice, Faculty of Education, Chiba University
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Yoko ICHIKAWA
Center for Research, Training and Guidance in Educational Practice, Faculty of Education, Chiba University
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Toru TATSUKI
Department of Human Welfare, College of Life Sciences, Ibaraki Christian University
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Tetsuo IWASAKI
Department of Elementary Education, College of Literture, Ibaraki Christian University