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The Social Behavior of Bees. A Comparative Study

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Hymenoptera. Chrysididae

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Systematik,Verbreitung und Ökologie der Gattungen Eucera Law. und Tetralonia Spin. (Hym.)

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Cuckoo-wasps. Hymenoptera, Chrysididae

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Observations on Sphecodes

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Hymenopterological notes

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Hedychrum rutilans, Dhb., and Hedychrum fervidum nec. F. Smith

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Nidification of Odynerus reniformis Gmel., near Chobham

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Hylaeus cornutus Curtis (Hymenoptera: Sphecidae [sic]) in South London

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Ceropales variegata near Holmwood

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