00309nam a2200121Ia 45000030006000000080041000060400015000471000024000622450037000862600035001235460012001580050017001700STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aFicken Frederick Ed  aAmerican mathematical monthly 72  bMathematical Associationc1965  aEnglish20220125170026.0