Corcoran, Mary K. <br/><br/>
The circulatory story / 
Mary K. Corcoran ; illustrated by Jef Czekaj. 
 - New York :   Scholastic,   2010.  
 - 41 pages :   color illustrations ;   28 cm  
<br/><br/>Includes bibliographical references (p. [42]). 
<br/><br/>R<br/> 
<br/><br/> Your hardworking heart started beating eight months before you were born and continues to beat about one hundred thousand times a day. "By the time you're seventy years old, it will have beaten about 2.5 billion times." Find out the story behind each beat on a journey through the body's circulatory system. 
<br/><br/> 780  R<br/>  Lexile adjusted <br/>  Raz-Plus<br/> 
<br/><br/><label>ISBN: </label>9781580892087 (reinforced) :  $17.95 1580892086 (reinforced) : 9781580892094 (pbk.) 9780545496605 1580892094 (pbk.) 
<br/><br/><label>LCCN: </label>2008025332 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blood--Circulation--Juvenile literature.<br/>Cardiovascular system--Physiology--Juvenile literature.<br/>Blood--Circulation.<br/>Circulatory system--Physiology.
<br/><br/><label>LC Class. No.: </label>QP103 .C67 
<br/><br/><label>Dewey Class. No.: </label>612.1