000 00264pam a2200109a 44500
082 _a136.745101
_bP571GE
100 _aPiaget, Jean
245 1 _aTHE CHILD'S CONCEPTION OF NUMBER
260 _a
_bRoutledge & Kegan Paul
_c1964
964 _gCIRC
997 _a77919 C
999 _c411006
_d411006