00289nam a2200121Ia 45000030006000000080041000060400015000471000018000622450049000802600009001295460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKuan Chen, I.  aWorld population growth and living standards  c1960  aEnglish20220125165623.0