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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.Boys' Second Book of Inventions by Ray Stannard BakerAuthor: Baker, Ray Stannard, 1870-1946,Language: English, Class: T: Technology, Release Date: Nov 15, 2013

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《Sexual Neuroses》
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