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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.Harper's Young People, February 21, 1882 by VariousAuthor: Various,Language: English, Class: AP: General Works: Periodicals, Release Date: Apr 1, 2017

《Rules and Practice for Adjusting Watches》
《Simple Simon》
《Explorations in Australia》
《Slave Narratives: a Folk History of Slavery in the United States》
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