Ley, Willy <br/><br/>
poles 

 - 
 - Nederland  Time-Life International  1976 
 - 192 p.,illus   
<br/><br/>  Life nature library 1.Polar regions 
<br/><br/><label>ISBN: </label>
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Science  Chemistry  Pure sciences  Natural sciences  Natural history  Marine biology  Aquarium  Life sciences  Biology  Animals and plants  Nature  Wild life  Botany  Biology  Zoology  Birds 
<br/><br/><label>Dewey Class. No.: </label>502