000 00278nam a2200133Ia 4500
700 _aRichmond, P.G.
100 _aPiaget
942 _cBK
654 _a
245 _aIntroduction Piaget
260 _aLondon
_bRoutledge & Kegan Paul
_c1970
082 _a155.4
300 _a113
999 _c389943
_d389943
041 _aeng