00313nam a2200133Ia 45000030006000000080041000060400015000471000020000622450026000822500011001082600031001195460012001500050017001620STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aCoxeter, H.S.M.  aReal projective plane  aSecond  bCambridge universityc1961  aEnglish20220125170017.0