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Akira Tokuyama
[Japan]
Faculty of Education, Shizuoka University [Japan]
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Toru Iwahashi
[Japan]
Faculty of Education, Shizuoka University [Japan]
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Kazukuni Kimiya
[Japan]
Faculty of Education, Shizuoka University [Japan]
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Takashi Handa
[Japan]
Faculty of Education, Shizuoka University [Japan]
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Shizuo Yoshida
[Japan]
Faculty of Science, Shizuoka University [Japan]
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Ken-ichi Otsuka
[Japan]
Faculty of Science, Shizuoka University [Japan]