000 00309nam a2200133Ia 4500
008 211201s2005 xx 000 0 eng d
082 _a372.3
100 _aSINGH, U.K.
245 0 _aTEACHING OF SCIENCE
260 _bCOMMONWEALTH
_aNEW DELHI
_c2005
300 _a256
650 _aEducation
942 _2ddc
_cDOE
999 _c4276
_d4276