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西谷 三四郎, 堅田 明義, 氏森 英亜, 大日方 重利, 梅谷 忠勇. "2 精神薄弱児の弁別逆転学習(2) : 学習材料の抽象性の効果について(4.学習)." Annual Convention of the Japanese Association of Educational Psychology 11.0 (1969) 106-107