000 00313nam a2200133Ia 4500
008 241225s9999 xx 000 0 und d
020 _a0
082 _a500
_bIIS
100 _aIis,.
245 0 _aJournal of science education :
260 _aMumbai :
_bIis,
_c1992.
365 _a0.00
650 _aPure Sciences
999 _c11256
_d11256