Bird census techniques / 
Colin J. Bibby ... [et al.]  ; illustrated by Sandra Lambton, RSPB and Simon Mustoe. 
 - 2nd ed. 
 - London ;  San Diego :  Academic,  c2000. 
 - xvi, 302 p. :  ill., maps ;  25 cm. 
<br/><br/> Previous ed.: 1992. 
<br/><br/><label>ISBN: </label>0120958317 
<br/><br/><label>LCCN: </label>00101511  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Counting.<br/>Bird populations--Estimates--Great Britain.<br/>Birds--Research.
<br/><br/><label>LC Class. No.: </label>QL677.5  / .B476 2000 
<br/><br/><label>Dewey Class. No.: </label>598/.028/7