书籍详情
格式
电子书
页数
44
语言
英语
已发布
Jan 1, 2012
出版商
Lerner Publications
ISBN-10
1322068402
ISBN-13
9781322068404
描述
The circulatory system is made up of the heart, the blood, and strong tubes called blood vessels. But what does the circulatory system do? And how do its parts work together to keep your body healthy?