525,701KLAUSMEIER HERBERT JOHN, GHATALA ELIZABETH SCHWENN, FRAYER DOROTHY ANN Conceptual learning and development. A cognitive view. New York 1974 Academic Press, Inc. 8° s. XI, nib. 1, 283, il.
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KLAUSMEIER HERBERT JOHN, GHATALA ELIZABETH SCHWENN, FRAYER DOROTHY ANN
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KLAUSMEIER HERBERT JOHN, GHATALA ELIZABETH SCHWENN, FRAYER DOROTHY ANN