000 00385nam a2200157Ia 4500
003 NIELib
008 211019s9999||||xx |||||||||||||| ||und||
082 _a507
_bYAD
100 _aYadav, M.S.
245 _aTeaching of Science
260 _bAnmol Publications,
_c1992.
_aNew Delhi :
300 _a240p.;
_c23cm
650 _aScience Teaching
650 _aScience
942 _2ddc
_cLM
999 _c37003
_d37003