Gray, Leon,  1974- <br/><br/>
How does GPS work? / 
Leon Gray. 
 - New York, NY :  Gareth Stevens Pub.,  2014. 
 - 48 p. :  col. ill., col. maps ;  29 cm. 
 - High-tech science .
<br/><br/>Includes bibliographical references (p. 47) and index. 
<br/><br/><label>ISBN: </label>9781482403930 1482403935 9781482403947 (pbk.) 1482403943 (pbk.) 
<br/><br/><label>LCCN: </label>2014415065 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Global Positioning System--Juvenile literature.<br/>Global Positioning System.<br/>GPS.<br/>Navigation.
<br/><br/><label>LC Class. No.: </label>G109.5  / .G734 2014 
<br/><br/><label>Dewey Class. No.: </label>910/.285