Krebs, J R  . <br/><br/>
An introduction to behavioural ecology /  
J.R. Krebs and N.B. Davies. 
 - Oxford :   Blackwell Scientific Publns. ,   1981. 
 - 389p. :   ills ;   22cm .  
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0632014989  UKP 14.50 
<br/><br/><label>Subjects--Index Terms: </label>ECOLOGY 
<br/><br/><label>Dewey Class. No.: </label>591.51  / KRE/I