Tinbergen, Niko <br/><br/>
The animal in its world:  explorations of an ethologist 1932-1972/ 
by Niko Tinbergen ; foreword by Sir Peter Medawar 
 - London:  George Allen & Unwin,  1972 
 - 343p.: ill. 
<br/><br/> Includes index 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>45910146 
<br/><br/><label>LC Class. No.: </label>QL 751