00327nam a2200121Ia 45000030006000000080041000060400015000471000023000622450071000852600020001565460012001760050017001880STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aDurell Clement, V.  aHints and solutions of the exercises in concise geometrical conics  bMacmillanc1927  aEnglish20220125170012.0