Category:Diagnosing bee diseases in the apiary

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Diagnosing bee diseases in the apiary. By C.E. Burnside, A.P. Sturtevant, apiculturists, and E.C. Holst, bacteriologist, Division of Bee Culture, Bureau of Entomology and Plant Quarantine.
Circular n°292, july 1936, revised january 1949. U.S. Department of Agriculture.

Media in category "Diagnosing bee diseases in the apiary"

The following 20 files are in this category, out of 20 total.