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Influence of strain, dose of virus, and age at inoculation on subgroup J avian leukosis virus persistence, antibody response, and oncogenicity in commercial meat-type chickens
Putting the cart before the horse: taxonomy of the species of Philopterus (Phthiraptera: Ischnocera: Philopteridae) of the goldcrest, Regulus regulus (Linnaeus, 1758)(Aves: Passeriformes: Regulidae)
First inter-American conference on conservation and utilisation of American Nonhuman primates in biomedical research: Scientific Publication No. 317, Pan American Health Organization of the World Health Organization, 1976, Washington, DC, US $8.00