1.
図書 |
by Jean Piaget and Bärbel Inhelder ; translated from the French by F.J. Langdon & J.L. Lunzer
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2.
図書 |
Jean Piaget ; translated by Margaret Cook
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3.
図書 |
by Jean Piaget ; [translated from the French by Margaret Cook]
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4.
図書 |
Jean Piaget ; translated by Margaret Cook
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5.
図書 |
by Jean Piaget ; [translated by C. Gattegno and F.M. Hodgson]
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6.
図書 |
by Jean Piaget ; [Translated by C. Gattegno and F. M. Hodgson]
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