Nature's great events / 
general editor: Karen Pass; introduction by Brian Leith. 
 - London :  Octopus Publishing,  c2009. 
 - 320p. : col. photos 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural history<br/>Animal migration<br/>Biological rhythm<br/>Animal populations