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Avian Diseases|October 1, 1989
An outbreak of nephropathogenic H13 infectious bronchitis in commercial broilersG D Butcher, R W Winterfield, D P ShapiroAvian Diseases|October 1, 1990
Pathogenesis of H13 nephropathogenic infectious bronchitis virusG D Butcher, R W Winterfield, D P ShapiroAvian Diseases|April 1, 1989
Relationship between delayed onset of egg production and involution of the bursa of Fabricius in White Leghorn chickensG D Butcher, R H Harms, R W WinterfieldAvian Diseases|October 1, 1990
Mycobacterium infection in a gray-cheeked parakeetG D Butcher, W M Reed, R W Winterfield, et al.Poultry Science|January 1, 1984
Vaccination of chickens with newcastle disease and infectious bronchitis vaccines administered singly and in combinationR W WinterfieldPoultry Science|January 1, 1985
Avian pox: infection and immunity with quail, psittacine, fowl, and pigeon pox virusesR W Winterfield, W ReedAvian Diseases|October 1, 1978
Immune response and pathogenicity of different strains of infectious bursal disease virus applied as vaccinesR W Winterfield, H L ThackerAmerican Journal of Veterinary Research|April 1, 1975
Antigenic characterization of the inclusion body hepatitis virusA M Fadly, R W WinterfieldAvian Diseases|January 1, 1984
Pathogenicity of various adenovirus serotypes in the presence of Escherichia coli in chickensA S Dhillon, R W WinterfieldAvian Diseases|April 1, 1975
Acute copper toxicosis in the Canada gooseB M Henderson, R W WinterfieldPageof 5