The Circulatory System

ISBN: 9780531207307

出版年: 2008-9

页数: 48

定价: $ 7.85

内容简介

Did you know that your nerve impulses are 1,000 times SLOWER than your computer? Or that it's normal to fart - as often as 20 times a day? Get the buzz on health and the human body with this fun and fascinating series.