000 00262nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSiddiqui, Mujibul Hasan
245 0 _aTeaching Of Science
260 _aNew Delhi
_bAPH
_c2011
300 _a303p.
942 _cBK
999 _c13572
_d13572