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Behavior
2
Eggs
Nests
1
Birds
1
Broeden
1
Gulls
1
Herring gull
1
Incubation
1
Kleine mantelmeeuwen
1
Larus
1
Lesser black-backed gull
1
Reproduction
1
Zilvermeeuwen
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1by Poulsen, Holger### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1953København : B. Lunos, 1953.139 p. : ill. ; 24 cm. -
2by Paludan, Knud, 1908-### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1951København : I Kommission hos Ejnar Munksgaard, 1951.142 [i.e. 144] p., [7] p. of plates : ill., map ; 24 cm.