000 00432nam a2200133Ia 4500
020 _a0-521-09803-3
365 _b
_3.50
942 _cBK
654 _a
245 _aDevelopmentes in mathematical education # Developments in Mathematical education
_bProceedings of the second international congress on Mathematical education
260 _aU.S.A.
_bCambridge University Press
_c1973
082 _a510.7
300 _bPb
_c21.7cm
_ax, 318
999 _c392003
_d392003
041 _aeng