00278nam a2200121Ia 45000030006000000080041000060400015000471000017000622450031000792600017001105460012001270050017001390STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBellis, B.T.  aMathematics gazette vol 56  bG.Bellc1972  aEnglish20220125170027.0