000 00346nam a2200145Ia 4500
020 _a8172452020
082 _b0001007
_a500
100 _a"Bonnet, Bob & Keen, Da"
245 0 _aScience Fair Projects Physics - 7f
260 _aNew Delhi
_c1998
300 _a96
944 _cR
999 _c604489
_d604489