Ardea
Official journal of the Netherlands Ornithologists' Union
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Hellebrekers W.P.J.
(1928) Korte Mededeelingen. Aantal eieren bij
Asio otus
(L.),
Acthene noctua vidalii
A.E. Brehm en
Riparia riparia
(L.). ARDEA 17 (3): 165-165
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