000 00280nam a22000977a 4500
082 _a153.4
_bPIA
100 _aPiaget, Jean
245 _aThe Development Of Thought
_b: Equilibration of Cognitive Structures /
_cJean Piaget
260 _aOxford
_bBasil Blackwell
_c1977
942 _cBK
999 _c498800
_d498800