000 00252nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aMaheshwari, V.K.
245 0 _aTeaching Of Science
260 _aMeerut
_bRLB
_c2010
300 _a363p.
942 _cBK
999 _c12612
_d12612