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The Carpenter Bees of California
By Paul D. Hurd, Jr.
University of California Press, 1955
Cite: 415812 with citation markup [cite:415812]
A publication of the University of California, in the "California Insect Survey" series. It may be downloaded for free as a PDF (4.9 MB) at this link.

Like many of the publications in this series, it has much useful information, despite being perhaps a bit dated.