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Why Do We Work Eight Hours a Day? : Discovery News
woher der Acht-Stunden-Arbeitstag kommt
September 5, 2013 at 4:49:03 PM GMT+2 *
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http://news.discovery.com/history/history-of-the-8-hour-work-day-120501.htm#mkcpgn=rssnws1
8
Stunden
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Herkunft
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