000 00273nam a22001217a 4500
020 _a0710070446
050 _aMED B841
_b4.P513
100 _aJEAN PIAGET
245 _aSTRUCTURALISM
260 _aNEW YORK
_bROUTLEDGE AND KEGAN PAUL
_c1971
300 _aVI,153P
942 _cBK
999 _c14577
_d14577