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The human body is an amazing, complex machine that runs on electrical impulses. Find out everything you ever wanted to know about how your body functions with Knowledge Masters: How Your Body Works. Perfect for school projects and homework tasks, or just for fun reading, this comprehensive reference features striking, full-color illustrations that grab readers' attention and make learning fun. It also comes complete with a free, fully interactive CDROM that includes exciting Internet links---guiding children to the most interesting and informative sites on the Web! This handy book is the perfect answer for inquisitive minds.