Ley, Willy <br/><br/>
Poles / 
Ley, Willy 
 -  Time Life International, Nederland,  1963 
 - p. ;  22 cm. 
<br/><br/><label>ISBN: </label>0809406179 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biodiversity; Conservation
<br/><br/><label>Dewey Class. No.: </label>R 577 LEY-P