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200 1 $a<<The>> Growth of Logical thinking from childhood to adolescence$ean essay on the construction of formal operational structures$fBärbel Inhelder and J. Piaget
210   $aLondon$cRoutledge & Kegan Paul$d1968
215   $aXXVI, 356 p.$d22 cm
606   $aPsicologia infantile$2BNCF
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996   $aGrowth of Logical thinking from childhood to adolescence$9948678
997   $aUNISA