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Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and his memory continues to inspire the creation of eBooks and related technologies today.The Wide World Magazine, Vol. 22, No. 132, March, 1909 by VariousAuthor: Various,Language: English, Class: AP: General Works: Periodicals, Release Date: Jun 25, 2016

《Scientific American Supplement, No. 315, January 14, 1882》
《The Captain of the Gray-Horse Troop》
《Méthode d‘équitation basée sur de nouveaux principes》
《The ‘Look About You’ Nature Study Books, Book 4》
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