00447nam a2200169Ia 450000500170000000800460001702000180006303700120008104000210009304100130011408400230012710000160015024500280016626000470019430000150024165000210025620250508161952.0008  250505s9999    xx            000 0 eng d  a0-7100-0027-8  aTextual  aFEDL bengcFEDL  aeng2eng  a155.413, PIAqFEDL  aPiaget Jean 0aBehaviour and evolution  aLondon, UKbRoutledge and Kegan Paulc1976  axxiv,158p.  aChild Psychology