Inside the great white 

 - April 2000 Vol. 197 No. 4 
 - National Geographic .
<br/><br/> Great White Sharks, Yemen, Chiquibul Cave, Update From the Field, San Pedro River, Nature's Rx, Duck-Billed Platypus 
<br/><br/><label>Subjects--Topical Terms: </label>--SHARKS--YEMEN--CHIQUIBUL--EXPLORATION--RIVER--NATURE--PLATYPUS