Osborne, Mary Pope. <br/><br/>
Polar bears and the Arctic :  a nonfiction companion to polar bears past bedtime / 
by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca. 
 - 1st ed. 
 - New York :  Random House,  c2007. 
 - p. cm. 
 - Magic tree house research guide .
<br/><br/> "A Stepping Stone book." 
<br/><br/><label>ISBN: </label>9780375832222 (trade) 9780375932229 (lib. bdg.) 9781428760097 (BWI bdg.) 1428760091 (BWI bdg.) 
<br/><br/><label>LCCN: </label>2006022306 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Polar bear--Arctic regions--Juvenile literature.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Arctic regions--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>QL737.C27  / O83 2007 
<br/><br/><label>Dewey Class. No.: </label>599.786