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Systematics of the Colletidae based on mature larvae with phenetic analysis of apoid larvae (Hymenoptera, apoidea)
Baskı/Yayın Bilgisi 1981Kitap -
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A review of the North and Central American species of Paravilla Painter (Diptera--Bombyliidae)
Baskı/Yayın Bilgisi 1981Kitap -
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Wasps of the genus Trypoxylon subgenus Trypargilum in North America Hymenoptera, Sphecidae
Baskı/Yayın Bilgisi 1981Kitap -
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Biosystematic studies of Ceylonese Wasps, XVIII a monograph of the Philanthidae (Hymenoptera : Sphecoidea)
Baskı/Yayın Bilgisi 1981Kitap -
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