000 00297nam a2200121Ia 4500
100 _aPiaget, Jean
942 _cBK
654 _a
245 _aChild 's conception of the world
260 _aLondon
_bKegan Paul, Trench, Trubner & Company Limited
_c1960
082 _a155.4
300 _bHb
_aix,399
999 _c373016
_d373016
041 _aeng