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Author  |
Title | Year | Publication | Volume | Pages |
|---|---|---|---|---|---|
| DeVries, R. | Piaget's Social Theory | 1997 | Educational Researcher | 26 | 4-17 |
| Perret-Clermont, A.N.; Schubauer-Leoni, M.L. | Conflict and Cooperation as Opportunities for Learning | 1981 | Communication in Development | 203-234 |