The growth of logical thinking from childhood to adolescence an essay on the construction of formal operational structures
| Prif Awduron: | , |
|---|---|
| Awduron Eraill: | , |
| Fformat: | Llyfr |
| Iaith: | English French |
| Cyhoeddwyd: |
New York
Basic Books
[1958]
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| Pynciau: |