This book is part of a book series called Brainwaves .

This book has been graded for interest at 8-13 years.

There are 61 pages in this book. This is a reference book. This book was published 2008 by DK Publishing (Dorling Kindersley) .

Ralph Lazar (illustrator) is the creator of the Happiness Is. project, which is viewed by over 10 million people each week and followed by over 3. 4 million people on Facebook @itsthehappypage. Simon Adams is a writer and editor of non-fiction books, and has written extensively on history subjects for children. Lisa Swerling and Ralph Lazar established Last Lemon Productions in 1999, which originates, produces, and licenses cartoon properties including Harold's Planet (R) and Vimrod. www. lastlemon. com