00269nam a2200121Ia 45000030006000000080041000060400015000471000023000622450025000852600008001105460012001180050017001300STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aChakrabarthi, S.C.  aCo ordinate geometry  c943  aEnglish20220125170011.0