000 00255nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aDogra, M.S.
245 0 _aTeaching Of Mathematics
260 _aNew Delhi
_bMaya
_c2006
300 _a335p.
942 _cBK
999 _c12196
_d12196