I had mixed feelings about this book. It was full of facts about books from cultures I had never even heard about which I liked but it read like a 600 page widipekia article which for one page of the widipekia is OK but for 600 pages of reading, well, give me a break. I stumbled my way through it. It is a reprint of the 1953 book "The Hand Printed Book" which may explain the stilted style.
The overview is comprehensive and easy to follow. Unfortunately, Diringer makes no attempt to hide his western-centric viewpoint, which is tiresome. (Case in point: Asia is called an "outlying region.") The book was originally published in 1953, which explains some of this attitude.