Patterson, I. J <br/><br/>
The shelduck : a study in behavioural ecology 
I.J. Patterson ; illustrations by Chris Furse 
 - Cambridge  Cambridge University Press  1982 
 - x, 276 p. : ill., maps, port. ; 24 cm 
<br/><br/> Includes indexes. Bibliography: p. [256]-267 
<br/><br/><label>ISBN: </label>9780521113359 
<br/><br/><label>ISSN: </label>81021231 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shelduck - Behavior<br/>Shelduck - Ecology
<br/><br/><label>Dewey Class. No.: </label>598.41 PAT