000 00295nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aAmerican Journal of Physics
260 _aNew York
_bAmerican Association of Physics Teachers
_c1 Jan-31 Dec,1993
362 _a61-61
_b01-Dec
942 _2ddc
_cJ
999 _c191306
_d191306