Publication
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Integratie van kennis Article
Entomologische Berichten, 31(5), 84-92.January 1971
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Studies on Cynipidae Alloxystinae: 1. The identity of Alloxysta rubriceps (Kieffer, 1902), with some general remarks on the subfamily Article
Entomologische Berichten, 31(5), 93-100.January 1971
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Rhyacionia pinicolana Doubleday (Lep., Tortricidae) Article
Entomologische Berichten, 31(5), 100-100.January 1971
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Remarks on Mongolian Chrysopidae with description of a new species (Planipennia, Chrysopidae) Article
Entomologische Berichten, 31(5), 101-104.January 1971
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Enkele naamsveranderingen bij Nederlandsde Syrphidae en nog enkele opmerkingen Article
Entomologische Berichten, 31(6), 105-110.January 1971
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Enkele notities over Carabus auronitens (F.) (Col., Carabidae) Article
Entomologische Berichten, 31(6), 110-110.January 1971
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Macrolepidoptera in de Achterhoek in 1970. Article
Entomologische Berichten, 31(6), 110-110.January 1971
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Trekvlinders in 1969 Article
Entomologische Berichten, 31(6), 111-122.January 1971