Invention and Discovery
This illustrated history describes the most important inventions and discoveries that have marked the progress of the human race, from the Stone Age to the Space Age. It tells you when something was invented or discovered, what important improvements were made and what the latest version is. This book is arranged thematically under general topics. Each topic is grouped in sections, identified by a colored triangle at the bottom right-hand side of each double page.
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About this book
Water power and wind power
Metals and synthetic
Trains and bicycles