Download or read book The Knowledgebook written by National Geographic and published by National Geographic Books. This book was released on 2009 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indispensable for every home, library, and office, this handbook distills thousands of years of humankind's most significant ideas and achievements, explains how they are linked, and packs everything into a single, irresistibly readable volume. Illustrations.