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.Descripcion é historia del castillo de la aljafería by Mariano Nougués SecallAuthor: Nougués Secall, Mariano, 1808-1872,Language: Spanish, Class: NA: Fine Arts: Architecture, Release Date: Jul 11, 2008