Ross, Stewart <br/><br/>
Into the unknown :  how great explorers found their way by land, sea, and air / 
Stewart Ross ; illustrated by Stephen Biesty. 
 - First U.S. edition 
 - [85] pages :  color illustrations, color maps ;  26 cm. 
<br/><br/><label>ISBN: </label>9780763649487 
<br/><br/><label>LCCN: </label>2010038720 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Explorers--Juvenile literature.<br/>Discoveries in geography--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>G175  / .R7 2011 
<br/><br/><label>Dewey Class. No.: </label>910.9