000 00255nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSaxena, Jyoysna
245 0 _aQuality Education
260 _aNew Delhi
_bA.P.H.
_c2009
300 _a442p.
942 _cBK
999 _c13731
_d13731