books.google.co.uk - This book describes inventions and designs of ancient engineers that are the precursors of the present. The ages mainly range from 300 B.C. to 1600 A.D. with some exceptions from before and after this period. As for the very ancient ones, the book describes inventions (documented by archaeological finds...http://books.google.co.uk/books/about/Ancient_engineers_inventions_electronic.html?id=6GgyiMd6u8MC&utm_source=gb-gplus-shareAncient engineers' inventions [electronic resource]
