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| 200 | 1 |
_aChildren's construction of the operation of addition _fBetsey Grobecker, co-aut. Trevor Bond |
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| 461 | 1 |
_aArchives De Psychologie _vVol. 67, nº 261 (1999), p. 95-121 |
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| 606 | 1 | _aPsicologia Geral | |
| 686 | _a2100 - Psicologia Geral | ||
| 700 | 1 |
_aGrobecker _bBetsey |
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| 701 | 1 |
_aBond _bTrevor |
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| 856 | 4 | _uhttps://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/r1.htm | |