Richard Walker, BSc, PhD, trained originally as a zoologist and gained his PhD in physiology and biochemistry. Richard taught both secondary school and university students for a number of years before embarking on a successful career as a writer and consultant. His books include Kingfisher Knowledge: Human Body (Kingfisher, 2006), Your Amazing Body (Carlton Books, 2008),and Eyewitness Human Body (Dorling Kindersley, 2009).
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