Malling Olsen, Klaus <br/><br/>
Gulls of Europe, Asia and North America / 
Klaus Malling Olsen  ; Illustrated by Hans Larsson. 
 -- London :   Christopher Helm,   2003 
 - 608 p.  il. 
<br/><br/>ISBN 0-7136-7087-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aves--Asia<br/>Aves--Norte America<br/>Gaviotas--Europa
<br/><br/><label>Universal Decimal Class. No.: </label>598.243.8(4+5+7)