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.Catálogo Instructivo de las Colecciones Mineralógicas by Bodenbender and HermitteAuthor: Hermitte, Enrique Martín, 1871-1955,Language: Spanish, Class: QE: Science: Geology, Release Date: Dec 22, 2006