000 00288nam a2200109Ia 4500
008 200527s9999||||xx |||||||||||||| ||und||
082 _a150 PIA
100 _aPiaget, Jean
245 0 _aPsychology and Epistemology: Towards a Theory of Knowledge
264 _bPenguin
_c1972
300 _a107p.
999 _c15259
_d15259