How old is it? solving the riddle of ages 

 - September 2001 Vol. 200 No. 3 
 - National Geographic .
<br/><br/> Wildlife Without Borders, Egypt's Hidden Tombs, Changing America, Walruses, How Old Is It?, The Garifuna, Dayton, TN 
<br/><br/><label>Subjects--Topical Terms: </label>--EGYPT'S TOMB--WALRUS--HOW OLD