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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.A Study of Splashes by A. M. WorthingtonAuthor: Worthington, A. M. (Arthur Mason), 1852-1916,Language: English, Class: QC: Science: Physics, Release Date: May 28, 2012

《Kustaa II Aadolf ja h?nen aikalaisensa I: Kuningas Jumalan armosta》
《American Hand Book of the Daguerreotype》
《How Women May Earn a Living》
《Panu》
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