00285nam a2200121Ia 450000500170000000800410001704100080005808200130006610000150007924500270009426000330012130000090015420260720174651.0260720s1937    xx            000 0 und d  aeng  a900 PERG  aPerry, W J  aGrowth of civilization  aEnglandbPenguin Booksc1937  a243p