00345nam a2200133Ia 45000030006000000080041000060400015000471000022000622450068000842500010001522600020001625460012001820050017001940STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBell Robert, J.T.  aElementary treatise on co ordinate geometry of three dimensions  aThird  bMacmillanc1960  aEnglish20220125170011.0