Osborne, Mary Pope. <br/><br/>
Sabertooths and the ice age :  a nonfiction companion to Sunset of the sabertooth / 
by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca. 
 - 1st ed. 
 - New York :  Random House,  c2005. 
 - 121 p. :  ill. ;  19 cm. 
 - Magic tree house research guide .
<br/><br/> "A Stepping Stone book." 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0375823808 0375923802 (lib. bdg.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Glacial epoch--Juvenile literature.<br/>Glaciers--Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>560.179