000 00265nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aYadav, M.S.
245 0 _aTeaching Of Science
260 _aNew Delhi
_bAnmol Publications
_c1992
300 _a240p.
942 _cBK
999 _c11560
_d11560