000 00263nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSharma, B.D.
245 0 _aShiksha Thatha Suchna Takniki
260 _aNew Delhi
_bOmega
_c2009
300 _a300p.
942 _cBK
999 _c12994
_d12994