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Date: 2011-08-08 13:52:41Technology Engineering Horology Islamic Golden Age Al-Jazari Locksmiths Salim Al-Hassani Abbas Ibn Firnas Elephant clock Science Mechanical engineers Clockmakers | http://www.wipo.int/wipo_magazine/en[removed]article_0008.htmlAdd to Reading ListSource URL: www.1001inventions.comDownload Document from Source WebsiteFile Size: 157,51 KBShare Document on Facebook |