Loss from foul brood and poor management Foster, Wesley. creator text book Fort Collins, Colo [1912] 1912
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ENG Reprint from the Annual report of the Colorado State Board of Horticulture, 1911. Bees Diseases Circular 3, April, 1912. Office of State Entomologist, Fort Collins, Colorado https://www.biodiversitylibrary.org/bibliography/57192 63329439 10.5962/bhl.title.57192 NIC