The solutions employed for the printing and binding of books continued essentially unchanged through the 15th century into the early 20th century. When there was additional mechanization, a book printer in 1900 experienced Considerably in common with Gutenberg. Gutenberg's invention was using movable metal forms, assembled into words, traces, and https://www.youtube.com/channel/UCP9Gw00CldPUmiu43y7fdWw