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1
A revisional study of the bees of the genus Perdita F. Smith, with special reference to the fauna of the Pacific Coast (Hymenoptera, Apoidea)
Berkeley : University of California Press, 1954“…University of California Press,…”
Format: Book
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2
The North American species of Heterosarus Robertson (Hymenoptera, Apoidea)
Berkeley : University of California Press, 1975“…University of California Press,…”
Format: Book
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3
Review of North American Exomalopsis (Hymenoptera, Anthophoridae)
Berkeley : University of California Press, 1980“…University of California Press,…”
Format: Book
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4
Revision of the genus Pseudopanurgus of North America (Hymenoptera, Apoidea)
Berkeley : University of California Press, 1973“…University of California Press,…”
Format: Book