000 00279nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSankhala, D.P.
245 0 _aTeaching Of Mathematics Secondary School
260 _aNew Delhi
_bAdhyayan
_c2009
300 _a189p.
942 _cBK
999 _c15366
_d15366