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.Mining Laws of Ohio, 1921 by Ohio Department of Industrial RelationsAuthor: ,Language: English, Class: TN: Technology: Mining engineering, Metallurgy, Release Date: Jan 3, 2006