. The diagnosis of bee diseases by laboratory methods. Bees. UNITED STATES DEPARTMENT OF AGRICULTURE. *\&'%jru |fe BULLETIN No. 671 j Contribution from the Bureau of Entomology L. O. HOWARD, Chief. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McCray, Arthur Howard, 1880-1919; White, G. F. (Gershom Franklin), b. 1875. Washington, D. C. : U. S. Dept. of Agriculture

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwa, booksubjectbees