The circulatory system.-- 

 - 48 p . : col. ill.    27 cm.-- (Worlds book's human body works ) 
<br/><br/><label>ISBN: </label>978-0-7166-4427-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cardiovascular systems--Juvenile literature.<br/>Hearts--Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>612.1 C496 c2007.