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American Journal of Veterinary Research|April 1, 1978
Vaccination for fowl plagueW K Butterfield, C H CampbellScience (New York, N.Y.)|June 24, 1977
Persistence of Hong Kong influenza virus variants in pigsK F Shortridge, R G Webster, W K Butterfield, et al.Bulletin of the World Health Organization|January 1, 1979
Diversity of influenza A virus subtypes isolated from domestic poultry in Hong KongK F Shortridge, W K Butterfield, R G Webster, et al.Bulletin of the World Health Organization|January 1, 1977
Isolation and characterization of influenza A viruses from avian species in Hong KongK F Shortridge, W K Butterfield, R G Webster, et al.The Journal of Infectious Diseases|November 1, 1978
Identification of a swine influenza virus (Hsw1N1) isolated from a duck in Hong KongW K Butterfield, C H Campbell, R G Webster, et al.Veterinary Microbiology|September 1, 1982
Electrophoretic comparison of the genomes of North American bluetongue viruses, one Australian bluetongue virus, and three other related orbivirusesD L Knudson, W K Butterfield, R E Shope, et al.Archives of Virology|January 1, 1978
Isolation and serological characterization of influenza A viruses from birds that were dead on arrival at Tokyo airportK Nerome, M Nakayama, M Ishida, et al.Avian Diseases|April 1, 1975
Detection and differentiation of strains of Newcastle Disease Virus by complement fixationW K Butterfield, J H GravesLancet (London, England)|August 25, 1984
The severe lacticacidosis of thiamine deficiency: acute pernicious or fulminating beriberiC H CampbellVaccine|December 1, 1985
Immunogenicity of bluetongue virus inactivated by gamma irradiationC H CampbellPageof 6