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Het genus Hylaeus in Nederland (Hymenoptera, Colletidae)

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Prodromus der Hymenopteren der Tschechoslowakei. Part 9: Apoidea, 1

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The Chrysidid wasps of the World

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Green deserts? The invertebrate fauna of mown grass playing fields

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Nid de l’Odynerus scoticus Curtis (Hym., Vespidae)

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A new British “Mason Wasp”

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A new key for the identification of British species of Aphelopus (Hym: Dryinidae)

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Zur Bionomie von Lasioglossum (Evylaeus) fratellum (Pérez), einer Furchenbiene mit langlebigen Weibchen (Hymenoptera, Halictinae)

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Recherches sur les Hyménoptères nidifiantes aphidivores. II. Le genre Pemphredon

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Worker reproduction and social hierarchies in Leptothorax ants

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