00313nam a2200121Ia 45000030006000000080041000060400015000471000023000622450048000852600029001335460012001620050017001740STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKrishna Iyer, C.S.  aElementary algebra for school final C group  bKrishna Iyer, C.S.c1926  aEnglish20220125170026.0