000 00291nam a2200109Ia 4500
008 200527s9999||||xx |||||||||||||| ||und||
082 _a155.4 PIA I
100 _aPiaget, Jean , Inhelder, Barbel
245 0 _aPsychology of the Child
264 _bRoutledge And Keynpaul
_c1969
300 _a173p.
999 _c15244
_d15244