00307nam a2200121Ia 45000030006000000080041000060400015000471000023000622450049000852600022001345460012001560050017001680STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aShepard Clough, B.  aEconomic development of western civilization  bMcgraw hillc1959  aEnglish20220125165618.0