00323nam a2200121Ia 45000030006000000080041000060400015000471000022000622450068000842600020001525460012001720050017001840STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBell Robert, J.T.  aElementary treatise on co ordinate geometry of three dimensions  bMacmillanc1960  aEnglish20220125170011.0