Osborne, Mary Pope <br/><br/>
Magic tree house fact tracker : polar bears and the arctic / 
Mary Pope Osborne and Natalie Pope Boyce 
 - New York  Random House  2007 
 - 119 p. 
<br/><br/><label>ISBN: </label>9780375832222 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ﾠ<br/>Young Learnersﾠ<br/>Arctic regions-Juvenile literatureﾠ<br/>Polar bear-Arctic regions-Juvenile literature.ﾠ
<br/><br/><label>Dewey Class. No.: </label>599.786 OSB-M