000 00310nam a2200121Ia 4500
008 160930s9999 xx 000 0 und d
020 _a9788126117246
100 _aYadav, M. S.
245 _aTeaching of Science
260 _aNew Delhi
_bAnmol Publishers Pvt. Ltd.
_c1992
300 _a240p.;21.5cm.
942 _cDB
999 _c8700
_d8700