Your mouth really is filthy! It’s a saliva bath for millions of tiny little creatures that share your food, chew holes in your teeth, and make your breath smell like a garbage truck. From cavities to canker sores, those little creatures can also create some repulsive problems. Learn all about saliva, plaque, and the bacteria that infest your mouth – and find out how to keep that mouth of yours healthy. With close-up pictures and lots of disgusting facts, this book tells all about the gross science behind your body’s functions.
语言 英语 ● 格式 PDF ● ISBN 9780761381105 ● 出版者 Lerner Publishing Group ● 发布时间 2011 ● 下载 3 时 ● 货币 EUR ● ID 4753464 ● 复制保护 Adobe DRM
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