000 00485nam a2200169Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a510.7
_bN277
110 _aNational Council of Teachers of Mathematics
245 _aInstruction in arithmetic
_byearbook
260 _aN Y
_bColumbia University
_c1960
440 _aNational Council of Teachers of Mathematics; 25
650 _aArithmetic
650 _aMathematics
942 _cBK
999 _c47669
_d47669