000 00288nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aMathematics Teacher
260 _aNational Council of Teachers of Mathematics
_bReston
_c1 Apr-30 Sep,1993
362 _a86-86
_b04-Sep
942 _2ddc
_cJ
999 _c190461
_d190461