000 00270nam a2200097Ia 4500
008 190719s9999 xx 000 0 und d
100 _aN Kuppuswami Aiyanger
245 0 _aTeaching of mathematics in the new education
260 _aJallandhar
_bDoaba House
_c1950
942 _cBK
999 _c3956
_d3956