Planet earth /   Brian Williams.   

 - Essex :  Miles Kelly Publishing,  c2004.   
 - 40p. : col. ill.   
 -  Question & answers encyclopedia   .
<br/><br/> Includes index <br/> 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>CIR 551 W67 2004