00297nam a2200121Ia 45000030006000000080041000060400015000471000017000622450036000792600031001155460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRamsey, A.S.  aElementary co ordinate geometry  bCambridge universityc1932  aEnglish20220125170013.0