00305nam a2200121Ia 45000030006000000080041000060400015000471000025000622450032000872600035001195460012001540050017001660STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBhoomhead Antony, W.  aMathematical gazette vol 56  bMathematical Associationc1972  aEnglish20220125170027.0