- Paperback: 400 pages
- Publisher: National Geographic Society; 3rd Revised edition edition (15 Sep 2009)
- Language English
- ISBN-10: 142620521X
- ISBN-13: 978-1426205217
- Product Dimensions: 13.5 x 2.2 x 21.4 cm
- Amazon Bestsellers Rank: 895,774 in Books (See Top 100 in Books)