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.Pyrometry: A Practical Treatise on the Measurement of High Temperatures by DarlingAuthor: Darling, Charles R. (Charles Robert), 1870-,Language: English, Class: QC: Science: Physics, Release Date: Jan 10, 2018