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…fective People''<br /><small>('' Die 7 Wege zur Effektivität'')</small> || Stephen R. Covey || Englisch || 1989 || 15 Millionen<ref>[http://www.forbes.com/hom …s/2007/04/26/whawking126.xml The Telegraph] on Stephen Hawking: „Professor Hawking is the author of ''A Brief History of Time'' — which has sold 10 million co …