000 00295nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aAmerican Journal of Physics
260 _aAmerican Association of Physics Teachers
_bNew York
_c1 Jan-30 Apr,2012
362 _a80-80
_b01-Apr
942 _2ddc
_cJ
999 _c183234
_d183234