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1
Ecology of the squash and gourd bee, Peponapis pruinosa, on cultivated cucurbits in California (Hymenoptera: Apoidea)
Washington : Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1974Format: Government Document Book
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2
Principal sunflower bees of North America with emphasis on the Southwestern United States (Hymenoptera, Apoidea)
Washington : Smithsonian Institution Press, 1980Format: Government Document Book
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3
Revision of the Nearctic species of the pompilid genus Pepsis (Hymenoptera, Pompilidae).
New York : [American Museum of Natural History], 1952Format: Thesis Book
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4
Ecology of the squash and gourd bee, Peponapis pruinosa, on cultivated cucurbits in California (Hymenoptera: Apoidea)
Washington, D.C. : Smithsonian Institution Press : [For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1974Format: Government Document Book
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5
An annotated catalog of the carpenter bees (genus Xylocopa Latreille) of the Western Hemisphere (Hymenoptera, Anthophoridae)
Washington : Smithsonian Institution Press, 1978Format: Book
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6
The principal Larrea bees of the southwestern United States (Hymenoptera, Apoidea)
Washington : Smithsonian Institution Press, 1975Format: Government Document Book
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7
The principal Larrea bees of the southwestern United States (Hymenoptera, Apoidea)
Washington, D.C. : Smithsonian Institution Press, 1975Format: Government Document Book
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8
The melectine bees of California (Hymenoptera: Anthrophoridae)
Berkeley : University of California Press, 1951Format: Book
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9
Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea)
[Washington, D.C.] : [Smithsonian Institution], 1972Format: Government Document Book
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10
The bee family Oxaeidae with a revision of the North American species (Hymenoptera, Apoidea)
Washington : Smithsonian Institution Press, 1976Format: Government Document Book
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11
An annotated catalog of the carpenter bees (genus Xylocopa Latreille) of the Western Hemisphere (Hymenoptera: Anthophoridae)
Washington : Smithsonian Institution Press, 1978Format: Government Document Book
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12
The carpenter bees of California (Hymenoptera: Apoidea).
Berkeley : University of California Press, 1955Format: Book
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13
The megachiline bees of California (Hymenoptera: Megachilidae)
Berkeley : University of California Press, 1955Format: Book
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14
The California velvet ants of the genus Dasymutilla Ashmead (Hymenoptera: Mutillidae).
Berkeley : University of California Press, 1951Format: Book
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15
The bee family Oxaeidae with a revision of the North American species (Hymenoptera, Apoidea)
Washington : Smithsonian Institution Press, 1976Format: Government Document Book
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16
The Scoliidae of California (Hymenoptera: Aculeata).
Berkeley : University of California Press, 1952Format: Book
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17
An annotated catalog of the halictid bees of the Western Hemisphere (Hymenoptera: Halictidae)
Washington, D.C. : Smithsonian Institution Press, 1987Other Authors: “…Hurd, Paul D. (Paul David), 1921-1982…”
Format: Government Document Book
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18
The conopid flies of California (Diptera)
Berkeley : University of California Press, 1957Other Authors: “…Hurd, Paul D. (Paul David), 1921-1982…”
Format: Book
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19
Comparative behavioral biology of two Middle East species of carpenter bees (Xylocopa Latreille) (Hymenoptera:Apoidea)
Washington, D.C. : Smithsonian Institution Press, 1983Other Authors: “…Hurd, Paul D. (Paul David), 1921-1982…”
Format: Government Document Book
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20
Comparative behavioral biology of two Middle East species of carpenter bees (Xylocopa Latreille) (Hymenoptera:Apoidea)
Washington, D.C. : Smithsonian Institution Press, 1982Other Authors: “…Hurd, Paul D. (Paul David), 1921-1982…”
Format: Government Document Book