An Investigation Into 3-, 4-, and 5-Year-Old Children's Nonsymbolic Magnitude Comparison Ability According to Ratio Limit and Task Condition (비율제한 및 과제제시방법에 따른 3, 4, 5세 유아의 비상징 수 비교능력)
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- Korean Journal of Child Studies
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- v.38 no.1
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- pp.117-126
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- 2017