Hidden world of wildlife 
/ prepared by the Special Publications Division, National Geographic Society, Washington, D.C. 
 - 199 pages :  color illustrations 
<br/><br/> Includes index. 
<br/><br/>Etosha : dry season oasis American tropics : reals wet and warm Ocean worlds : secret places undersea Papua New Guinea : island paradise of birds 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology--Pictorial works<br/>Marine biology--Pictorial works
<br/><br/><label>Dewey Class. No.: </label>591