00307nam a2200133Ia 45000030006000000080041000060400015000471000016000622450051000782600009001293000006001385460012001440050017001560STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aTaro Yamane  aMathematics for economics an elementary survey  c1965  a0  aEnglish20220125165610.0