Publication
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Boekbesprekingen Article
Limosa, 54(3), 104-107.January 1981
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Korte mededelingen Article
Limosa, 54(4), 141-141.January 1981
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Nederlandse Ornithologische Unie; themadag Vogels tellen Article
Limosa, 54(4), 142-145.January 1981
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Zeldzame vogels in Nederland in 1980 Article
Limosa, 54(4), 127-136.January 1981
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Nederlandse Ornithologische Unie; themadag Watervogels Article
Limosa, 54(2), 68-71.January 1981
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Boekbesprekingen Article
Limosa, 54(4), 146-148.January 1981
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Avifauna van de Groote Heide Report
January 1981 -
Odonatological Abstracts Article
Odonatologica, 10(1), 65-83.January 1981