Richard, Walker <br/><br/>
Under the microscope:   heart how the blood gets around the body / 
Walker Richard. 
 - Danbury,CT :  Grolier,  1998. 
 - v.1, 48 p. : col. ill.:  29 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>0-7172-9265-7 
<br/><br/><label>LC Class. No.: </label>612 Un21h 2008 bk.1