Não informado. (1957). Avian Diseases. American Association of Avian Pathologists.
Citace podle Chicago (17th ed.)Não informado. Avian Diseases. kennett Square, Pa: American Association of Avian Pathologists, 1957.
Citace podle MLA (8th ed.)Não informado. Avian Diseases. American Association of Avian Pathologists, 1957.
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