000 00304nam a2200133Ia 4500
100 _aVessel, M.F.
365 _b5
942 _cBK
654 _a
245 _aElementary school science teaching
260 _aNew Delhi
_bPrentice Hall of India
_c1965
082 _a372.3
300 _bHb
_c23.3
_aviii,119
999 _c395113
_d395113
041 _aeng