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Economic Effects of and Responses to Changing Honey Bee Health, by Peyton Ferrier, Randal Rucker, Walter Thurman, and Michael Burgett, USDA, Economic Research Service, January 1994
The U.S. Beekeeping Industry, by Frederic L. Hoff and Lois Willet, USDA, Economic Research Service, Report 680, January 1994
