000 00286nam a2200121Ia 4500
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040 _cLDD
041 _aen
245 4 _aThe Physics Teacher
260 _aAmerican Association of Physics Teacher
_bNew York
_c1 Jan-30 Apr,2010
362 _a48-48
_b01-Apr
942 _2ddc
_cJ
999 _c181969
_d181969